Krumblor

Krumblor as it appears during a Dragonflight or Dragon Harvest.

Krumblor the cookie dragon is a widget in Cookie Clicker, providing passive boosts to gameplay through selectable auras. It can be unlocked through the 'How to bake your dragon' Heavenly Upgrade, and it can be upgraded through sacrificing buildings and cookies, unlocking new auras.

Upgrades

Icon	Name	Unlock condition	Base price	Description		ID
	How to bake your dragon (heavenly upgrade)	"Legacy" purchased	9	Allows you to purchase a crumbly egg once you have earned 1 million cookies. "A tome full of helpful tips such as 'oh god, stay away from it', 'why did we buy this thing, it's not even house-broken' and 'groom twice a week in the direction of the scales'."	323
	Pet the dragon (heavenly upgrade)	"How to bake your dragon" and "Residual luck" purchased	100 billion	Unlocks the ability to pet your dragon by clicking on it once hatched. "Dragons do not purr. If your dragon starts purring, vacate the area immediately."	647
	A crumbly egg	1 million cookies earned and "How to bake your dragon" purchased	25	Unlocks the cookie dragon egg. "Thank you for adopting this robust, fun-loving cookie dragon! It will bring you years of joy and entertainment. Keep in a dry and cool place, and away from other house pets. Subscription to home insurance is strongly advised."	324
	Dragon scale	Random drop from petting Krumblor	1,800 x CpS (max level dragon: 180 x CpS)	Cookie production multiplier +3%. Cost scales with CpS, but 10 times cheaper with a fully-trained dragon. "Your dragon sheds these regularly, so this one probably won't be missed. Note: icon not to scale."	648
	Dragon claw	Random drop from petting Krumblor	1,800 x CpS (max level dragon: 180 x CpS)	Clicks are +3% more powerful. Cost scales with CpS, but 10 times cheaper with a fully-trained dragon. "Will grow back in a few days' time. A six-inch retractable claw, like a razor, from the middle toe. So you know, try to show a little respect."	649
	Dragon fang	Random drop from petting Krumblor	1,800 x CpS (max level dragon: 180 x CpS)	+3% golden cookie gains. Dragon harvest and Dragonflight are 10% stronger. Cost scales with CpS, but 10 times cheaper with a fully-trained dragon. "Just a fallen baby tooth your dragon wanted you to have, as a gift. It might be smaller than an adult tooth, but it's still frighteningly sharp - and displays some awe-inspiring cavities, which you might expect from a creature made out of sweets."	650
	Dragon teddy bear	Random drop from petting Krumblor	1,800 x CpS (max level dragon: 180 x CpS)	+3% random drops. Cost scales with CpS, but 10 times cheaper with a fully-trained dragon. "Your dragon used to sleep with this. Now it's time for you to have it. Crafted in the likelihood of a fearsome beast. Stuffed with magical herbs picked long ago by a wandering wizard. Woven from elven yarn and a polyester blend."	651
	Dragon cookie	"Bake dragon cookie" dragon training completed	70 quadrillion	Cookie production multiplier +5%. "Imbued with the vigor and vitality of a full-grown cookie dragon, this mystical cookie will embolden your empire for the generations to come."	330

Dragon Stages

Switching auras costs one of the highest tier building owned.

Appearance	Title	Available action/description	Sacrifice
	Dragon egg	Chip it	1 million cookies
			2 million cookies
			4 million cookies
	Shivering dragon egg	Hatch it	8 million cookies
	Krumblor, cookie hatchling	Train Breath of Milk Aura: kittens are 5% more effective	16 million cookies
		Train Dragon Cursor Aura: clicking is 5% more effective	100 Cursors
		Train Elder Battalion Aura: grandmas gain +1% CpS for every non-grandma building	100 Grandmas
		Train Reaper of Fields Aura: golden cookies may trigger a Dragon Harvest	100 Farms
	Krumblor, cookie dragon	Train Earth Shatterer Aura: buildings sell back for 50% instead of 25%	100 Mines
		Train Master of the Armory Aura: all upgrades are 2% cheaper	100 Factories
		Train Fierce Hoarder Aura: all buildings are 2% cheaper	100 Banks
		Train Dragon God Aura: prestige CpS bonus +5%	100 Temples
		Train Arcane Aura Aura: golden cookies appear 5% more often	100 Wizard towers
		Train Dragonflight Aura: golden cookies may trigger a Dragonflight	100 Shipments
		Train Ancestral Metamorphosis Aura: golden cookies give 10% more cookies	100 Alchemy labs
		Train Unholy Dominion Aura: wrath cookies give 10% more cookies	100 Portals
		Train Epoch Manipulator Aura: golden cookie effects last 5% longer	100 Time machines
		Train Mind Over Matter Aura: +25% random drops	100 Antimatter condensers
		Train Radiant Appetite Aura: all cookie production multiplied by 2	100 Prisms
		Train Dragon's Fortune Aura: +123% CpS per golden cookie on-screen	100 Chancemakers
		Train Dragon's Curve Aura: sugar lumps grow 5% faster, 50% weirder	100 Fractal engines
		Train Reality Bending Aura: 10% of every other aura, combined	100 Javascript consoles
		Train Dragon Orbs Aura: selling your best building may grant a wish	100 Idleverses
		Train Supreme Intellect Aura: confers various powers to your minigames	100 Cortex bakers
		Train Dragon Guts Aura: Enhanced wrinklers	100 You
		Bake dragon cookie Delicious!	50 of every building
		Train secondary aura Lets you have two dragon auras simultaneously	200 of every building
		N/A Your dragon is fully trained	N/A

Auras

Icon	Aura Name	Description	Aura Effect
	Breath of Milk	Kittens are 5% more effective.	Milk Effect: 1.05x With Reality Bending: 1.055x
	Dragon Cursor	Clicking is 5% more powerful.	Clicking Effect: 1.05x With Reality Bending: 1.055x
	Elder Battalion	Grandmas gain +1% CpS for every non-grandma building.	Grandma Multiplier: 1+(0.01x(N-G)) With Reality Bending: 1+(0.011x(N-G))
	Reaper of Fields	Golden cookies may trigger a Dragon Harvest.	Golden Cookie Effect Pool: 19.25% chance of pooling (5% from Wrath Cookies) With Reality Bending: 19.25% (5% from Wrath Cookies)
	Earth Shatterer	Buildings sell back for 50% instead of 25%.	Sellback Rate: 50% With Reality Bending: 52.5%
	Master of the Armory	All upgrades are 2% cheaper.	Upgrade Discount: 0.98x With Reality Bending: 0.978x
	Fierce Hoarder	All buildings are 2% cheaper.	Building Discount: 0.98x With Reality Bending: 0.978x
	Dragon God	Prestige CpS bonus +5%.	Prestige Bonus: 1.05x With Reality Bending: 1.055x
	Arcane Aura	Golden cookies appear +5% more often.	Golden Spawn: 1.05x With Reality Bending: 1.055x
	Dragonflight	Golden cookies may trigger a Dragonflight.	Golden Cookie Effect Pool: 19.25% chance of pooling (5% from Wrath Cookies) With Reality Bending: 19.25% (5% from Wrath Cookies)
	Ancestral Metamorphosis	Golden cookies give 10% more cookies.	Golden Gain: 1.1x With Reality Bending: 1.11x
	Unholy Dominion	Wrath cookies give 10% more cookies.	Wrath Gain: 1.1x With Reality Bending: 1.11x
	Epoch Manipulator	Golden cookies last 5% longer.	Golden Time: 1.05x With Reality Bending: 1.055x
	Mind Over Matter	Random drops are 25% more common.	Random Drops: 1.25x With Reality Bending: 1.275x
	Radiant Appetite	All cookie production multiplied by 2.	Cookie Production: 2x With Reality Bending: 2.1x
	Dragon's Fortune	+123% CpS per golden cookie on-screen, multiplicative.	Golden CpS Bonus: 2.23x With Reality Bending: 2.353x
	Dragon's Curve	+5% sugar lump growth and sugar lumps are twice as likely to be unusual.	Sugar Lump Effects: Aging Multiplier: 1.05x With Reality Bending: 1.055x Type Selection: 1 reroll With Reality Bending: 1 reroll, 10% chance of 2nd reroll
	Reality Bending	One tenth of every other dragon aura, combined.	Base effects. See other auras for combined effects when equipped alongside Reality Bending. Milk Effect: 1.005x Clicking Effect: 1.005x Grandma Multiplier: 1+(0.001x(N-G)) Dragon Harvest pooling: 1.925% (or 0.5%) chance Sellback Rate: 27.5% Upgrade Discount: 0.998x Building Discount: 0.998x Prestige Bonus: 1.005x Golden Spawn: 1.005x Dragonflight pooling: 1.925% (or 0.5%) chance Golden Gain: 1.01x Wrath Gain: 1.01x Golden Time: 1.005x Random Drops: 1.025x Cookie Production: 1.1x Golden CpS Bonus: 1.123x Sugar Lump Effects: 1.005x Aging Multiplier, 10% chance of 1 reroll Wish Chance: 1% Minigame Powers Garden: 0.5% faster. Stock Market: Slightly chaotic. Pantheon: No effect. Grimoire: 1% difference. Wrinkler Effects: 1.02x wrinkler wither rate, 1.02x wrinkler drop rate
	Dragon Orbs	With no buffs and no golden cookies on screen, selling your most powerful building has 10% chance to summon one.	Wish Chance: 10% With Reality Bending: 11%
	Supreme Intellect	Confers various powers to your minigames while active. See the bottom of each minigame for more details.	Garden Garden plants age and mutate 5% faster. With Reality Bending: 5.5% faster. Stock Market The stock market is more chaotic. With Reality Bending: More chaotic. Pantheon The jade slot behaves as a ruby slot and the ruby slot behaves as a diamond slot. With Reality Bending: Base effect. Grimoire Grimoire spells are 10% cheaper but fail 10% more. With Reality Bending: 11% difference.
	Dragon Guts	You can attract 2 more wrinklers. Wrinklers digest 20% more cookies. Wrinklers explode into 20% more cookies.	Wrinkler Effects: Number of wrinklers: +2 Unaffected by Reality Bending Wrinkler wither rate: 1.2x With Reality Bending: 1.22x Wrinkler drop rate: 1.2x With Reality Bending: 1.22x

Petting the Dragon

After purchasing Pet the dragon, Krumblor can be pet by clicking its icon. If leveled up beyond level 8 (after sacrificing 100 farms), there is a 5% chance to drop an upgrade for every pet.

The next upgrade dropped upon petting is picked like so:

• Shuffle list of available drops
• Pick a drop in the list based on time in minutes
  • If minutes are 0 - 14, first upgrade is dropped
  • If minutes are 15 - 29, second upgrade is dropped
  • etc

Since the shuffle is based only on the game seed, to get all four drops, it is necessary to pet the dragon every quarter of an hour.

The 5% chance is not affected by upgrades and effects that change random drop rates.

Mobile version changes

Krumblor's appearance on mobile.

There are a few changes to Krumblor in the mobile version.

• Krumblor's appearance during Dragonflight and Dragon Harvest is different.
• Dragon Cursor enhances power clicks in addition to normal clicks.
• Dragon's Curve removed due to no Sugar Lumps on mobile.
• Supreme Intellect removed due to no minigames on mobile.
• Dragon petting is not available. The 4 upgrades normally dropped from petting are instead unlocked by training the dragon stages without auras, each unlocking 2 upgrades at random.

Changed Dragon Stages

Appearance	Title	Available action/description	Sacrifice
	Krumblor, cookie hatchling	Train Dragon Cursor Aura: enhanced power clicks; clicking is 5% more effective	100 Cursors
	Krumblor, cookie dragon	Train Dragon's Curve Unlocks 2 dragon upgrades.	100 Fractal engines
		Train Supreme Intellect Unlocks 2 dragon upgrades.	100 Cortex bakers

Changed Dragon Auras

Icon	Aura Name	Description	Aura Effect
	Dragon Cursor	Clicking is 5% more powerful. +5 max power clicks. Power click effects +5%.	Clicking Effect: 1.05x With Reality Bending: 1.055x Power Clicks: +5 max power clicks, +5% effect With Reality Bending: +6 max, +5.5%
	Dragon's Curve	N/A	Removed
	Reality Bending	One tenth of every other dragon aura, combined.	Added: +1 max power clicks, +0.5% power click effect Removed: Sugar Lump Effects, Minigame Powers
	Supreme Intellect	N/A	Removed

Strategy

Two comprehensive Krumblor guides: pastebin and google docs

If a player is going for the overall highest CPS boosts with auras, a combination of Breath of Milk, Elder Battalion, and Radiant Appetite will produce the largest CPS increase (the combination of two that produces the largest increase depends on the player's current progression in the game, see below). If a player is going for harvesting as many sugar lumps as possible, they should use a combination of Dragon's Curve and Reality Bending, as it reduces the maturation time and increases unusual lump rate the most.

This image shows the multiplier for the Breath of Milk dragon aura, based on the milk percentage and which kitten upgrades are active. The bottom line is the base multiplier, the next lines are the multiplier with Mokalsium, Mother Spirit at 5% or 10%. The lines for each kitten upgrade assume that all previous kitten upgrades are active as well. The base line assumes Santa's milk and cookies has been bought, but the 1.05 milk multiplier of Santa's milk would equal Mokalsium, Mother Spirit at 5%.

Using the Dragon's Cursor is not recommended, as if you have even just one mouse upgrade, Breath of Milk will usually improve your CpC (cookies per click) by more than 5% indirectly by increasing CpS (cookies per second), and Radiant Appetite will flat out double CpC through the CpS buff.

With optimal building distribution, Elder Battalion will give an overall very early game production increase of about 1%. The power of this aura will be minimal until you approach 12,000+ buildings owned and after purchasing "Elder Pact", where it will start to dramatically outperform Radiant Appetite. The aura's power will afterwards start to slowly decrease as one unshackles more buildings past fractal engines. In addition, the aura can be used to quickly obtain the achievements that require the player to bake a certain amount of cookies with Grandmas quicker, due to having a larger general CpS buff to grandma CpS than most other auras (although this is mostly irrelevant). However, this should not be used with Godzamok due to a decreased efficiency from selling buildings except for some cases .

Reaper of Fields gives naturally spawned Golden cookies a chance to yield Dragon Harvest, which multiplies CpS by 15 (17 with Dragon fang), and has a chance of ~6.2%. It may be added on top of frenzies through Dragon Orbs or stacking frenzy duration so that another golden cookie (and perhaps one after that) may be stacked with it.

Earth Shatterer should be used before selling all buildings and using the Chocolate egg, since Chocolate egg gives 5% of the current amount of cookies in bank. However, note that selling buildings do not increase the Cookies baked all time stat, so it does not increase prestige either - aside from if the sell makes the amount of cookies in bank exceed the Cookies baked this ascension stat.

The overall effect of Dragon God scales up to 5% with Prestige, as shown in this image on a log scale. Its full potential (of +5% CpS) is reached at approximately 900.7 quadrillion prestige. It should not be used for CpS.

Master of the Armory and Fierce Hoarder may be slotted whenever buying upgrades or buildings.

Arcane Aura is used to increase golden cookie spawn rates while being unable to perform DO ASS CLGCF, and stacking golden cookies for combos.

Dragonflight gives naturally spawned Golden cookies a chance to yield Dragonflight, which multiplies click power by 1111 (1223 with Dragon fang), and is about twice as common than Click Frenzy with a chance of ~6.2%. However, unlike Click Frenzy, it can never be gotten from the Grimoire, where Click Frenzy can be gotten with a 25% chance from successful casts of Force the Hand of Fate. Optimally, one would slot in this aura whenever clicking naturally spawned Golden cookies, then instantly swapping it to another (most likely CpS increasing) aura afterwards. Note that there are several restrictions on Dragonflight (the buff). Most notably, it overrides Click Frenzy at a 80% chance, and prevents Force the Hand of Fate from giving out Click Frenzy whenever it is active. In addition, Click Frenzy from naturally spawned Golden cookies are 20 times less common while it is active.

Ancestral Metamorphosis and Unholy Dominion only affect Lucky, Chain, and Cookie Storms. The benefit of Ancestral Metamorphosis is best utilized from slotting it when Lucky will cap at a percentage of bank and right before a chain breaks (although this may make the reward under 6 hours of CpS).

Epoch Manipulator is used for stacking buffs along with arcane aura. It is recommended over arcane aura because the increased time makes combo execution easier.

Mind over Matter is used for grinding seasonal upgrades and garden drops.

Radiant Appetite has a flat 100% bonus to all production. It easily produces the largest boost in production out of all almost the auras, with exceptions including Elder Battalion and Dragon's Fortune, which may sometimes produce more than it.

Dragon's Fortune can grant a multiplier of over 2 with just one golden cookie on the screen. This can be coupled well with Force The Hand Of Fate, as its multiplier can stack up extremely quickly without bound, resulting in a CpS multiplier of x5, x11.1, and x24.7 with 2, 3, and 4 Golden Cookies on screen, respectively. It is often used in conjunction with strategies such as Force The Hand Of Fate dualcasting or quadcasting to provide a large boost during combos.

Dragon's Curve only affects sugar lumps, but they can be used to buy various improvements. See sugar lump strategy.

Reality Bending has many effects, and may depend on the 2nd aura. Its effect is additive with the second aura.

Dragon Orbs can be used to very quickly kickstart an ascension through forcing combos without any of the primary Golden cookie upgrades, as well as making getting buff stacks easier. It can also be used to obtain Easter eggs quickly, as well as increase Golden Cookie Clicks faster (the spawns do not increment said stat, but Cookies Chains from these spawns force the next natural spawn to be a Cookie Chain, which results in more Golden Cookie Clicks due to the elevated chance for Cookie Chains).

Supreme Intellect gives the following buffs to minigames:

• Garden plants age and mutate 5% faster
• The Stock Market is more chaotic
• The jade slot of the Pantheon behaves as a ruby slot and the ruby slot behaves as a diamond slot
• Spells from the Grimoire are 10% cheaper but backfire 10% more

Supreme Intellect may be used to make plants age and mutate faster, although this may unbalance growth and gives less time for the plants to mutate. The stock market becomes faster paced, making the grind to Gaseous Assets faster. Boosting the pantheon swaps may be used to optimize certain grinds such as using the wrinkler spawn rate buff from Skruuia and golden cookie frequency buff from Selebrak at the same time. Assuming that Selebrak is in the ruby or jade slot, it may be swapped in every single Reindeer spawn to utilize the reindeer frequency and biscut drop rate buff. The cheaper grimoire spells may be utilized with special quadcasting strategies. The increased backfire chance may cause some spells to backfire. This may be used to get Elder Frenzy from an otherwise impossible position. It may also be used to find the backfire rate range of certain spells (eg. if a spell needs Supreme Intellect to backfire, then the backfire range is between 0.835 and 0.85).

Dragon Guts increases the bonus cookies generated by popping Wrinklers and increases the maximum amount of Wrinklers. When it is considered that its 20% wrinkler pop stat can be utilized independently and without having it on passively (by slotting when popping wrinklers, akin to Skruuia, which frees up a slot to slot another CpS aura), it provides an overall idle CpS increase of approximately 60% (fluctuates ~5%), making it inferior to Breath of Milk. If that is not considered, it is almost comparable to Radiant Appetite and Breath of Milk in terms of idle CpS, having a CpS increase of approximately 90%. Note that due to its Wrinkler cap increase, it also slightly increases Wrinkler spawn rate, so swapping between Dragon Guts and an aura that boosts random drop chance will finish Easter or Halloween faster.

Achievement

Icon	Name	Description	ID
	Here be dragon	Complete your dragon's training.	222

Trivia

• Krumblor will always appear below Santa.
• The left slot for Krumblor is considered the secondary aura slot, while the right slot is considered the primary aura slot.
• Krumblor makes a cameo appearance in AdventureQuest Dragons, another game made by Orteil in conjunction with Artix Entertainment.
• If the player has no buildings, there is no cost for switching auras.
• It takes a minimum of 4.98202195202296e+39 (4.98 duodecillion) cookies total to complete Krumblor's training.
• It is impossible to trigger Dragon Orbs if the sell removes all of the highest buildings.

References

• The upgrade "How to bake your dragon" is a reference to the book (and subsequent movie) "How to Train your Dragon" by Cressida Cowell.
• The aura "Dragon's Curve" is a reference to the family of fractals of the same name.
• The aura "Dragon Orbs" is a reference to the Dragon Ball series of anime and manga.
  • The reference was likely made due to the resemblance of the Idleverse's icon to the titular "Dragon Balls" of the Japanese franchise.
  • This relation likely also served as inspiration for the aura's effect, as one who collects the Dragon Balls is then granted a wish by a dragon.
• The achievement "Here be dragon" is a reference to the phrase here be dragons.
• The "Dragon Claw" random drop's description is a reference to "Jurassic Park", in which paleontologist Alan Grant describes a Velociraptor claw to a child.