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Baku the Mooneater
48158 • GIL_826
GIL 826.png
Dimensions: Full330 x 410px
GIL 826 Premium1.png
Dimensions: Full330 x 410px
Set:The WitchwoodThe Witchwood
Minion type:Beast
Cost:9 Mana icon.png
Attack:7 Attack icon.png
Health:8 Health
Artist:James Ryman
Start of Game:
If your deck has only odd- Cost cards, upgrade your Hero Power.
Flavor text

In her defense, it did look like a cookie.

Full tags
Wiki tags
Replace Hero Power, Start of Game
Wiki referenced tags
Cost-related, Hero Power-related, In-deck effect
Duels deck-building
External links


Baku the Mooneater is a legendary neutral minion card, from The Witchwood set. It was once in the Hall of Fame set from April 4, 2019 to March 30, 2021.

How to get[]

Auto-detected sources
Card packs
The Witchwood Pack
Wild Pack
Regular, Golden1
Crafting1600 dustdustRegular1
Crafting3200 dustdustGolden1

Generated Hero Powers[]

Demon's Bite
Dire Shapeshift
Ballista Shot
Fireblast Rank 2
The Silver Hand
Poisoned Daggers
Totemic Slam
Soul Tap
Tank Up!


  • Baku's "upgraded" hero powers function identically to hero powers upgraded by The Grand TournamentJusticar Trueheart.
    • As with Trueheart, the upgraded power is golden if the Baku card is golden, or if you are playing with a golden hero.[1]
  • 0-mana cards are even-cost cards. Cards without a mana cost (e.g. Kobolds & CatacombsShifting Scroll) are considered 0-cost cards.[2]
  • Your deck must not contain any even-costing cards from the very beginning of the game for this card's effect to activate.[3]
  • This card's effect takes priority over One Night in KarazhanPrince Malchezaar, so the effect will activate even if Prince Malchezaar shuffles in even-cost cards into your deck.[4]
  • Madness at the Darkmoon FaireC'Thun, the Shattered triggers after Baku, effectively preventing "upgraded hero power" effect.


Baku provides a very powerful bonus from the start of the game, at the cost of seriously hurting your deck building. Many staple cards cannot be used with Baku. However, it's possible to substitute cards with otherwise worse versions. For example, Journey to Un'GoroGluttonous Ooze can be used instead of LegacyAcidic Swamp Ooze and LegacyIronbeak Owl can be used instead of LegacySpellbreaker.

One of the notable downsides of Baku the Mooneater is having to put Baku herself into your deck. As a vanilla 7/8 for 9 mana, Baku is essentially a dead draw, especially so for the more aggressive decks that many of the upgraded Hero Powers support.

Baku's strategy is wildly different for each class.




The Witchwood's growing influence drives even the redoubtable citizens of Gilneas to fearful flights of fancy. Uneasy townsfolk share bizarre stories of black cats with knowing eyes, and giant moths that peer into windows during the dead of night. Stranger still, they all seem to share the same horrid dream, night after night: a feeling of unspeakable dread as they watch huge, spectral fangs devour the moon.[5]

Baku is unique to Hearthstone. According to Mike Donais: "Hagatha, the witch of the Witchwood awakened the trees and beasts of the woods making them stronger and angrier. Baku the Mooneater is the great worm that is basically her General."[6] Baku has apparently devoured the White Lady, the larger of Azeroth's two moons, leaving only the Blue Child.[7]

No being akin to Baku exists in any our exhaustive records that describe serpents, dragonhawks, dragons, or other scaled, magical creatures. Given that this being has not been seen physically by anyone at all—instead observed solely via shared dream visions—our duty to investigate her nature is clear.
Our arcanists’ initial hypothesis is that Baku may in fact be the tormented psyche of a dragon whose physical form is trapped within the bounds of the Witchwood, but outside of physical reality—some kind of dream-dwelling projection of this dragon’s mind, warped and twisted by Hagatha’s own nightmares.
Whatever the Mooneater’s true nature, those who dream of her tend to slowly descend into a fugue state—neither waking nor dreaming—and develop the ability to manifest their will in surprising ways. In brief moments of lucidity, these subjects express a feeling of crushing, unyielding dread, and report seeing a kaleidoscopic serpent coiling and stretching across the horizon, blotting out the sky overhead.[8]

Baku is similar in appearance to a sea serpent. The closest habitat to Gilneas that would contain them would be the Kelp'thar Forest.

Wowpedia icon.pngThis section uses content from Wowpedia.
Sea serpents are large serpents living in the seas of Azeroth. The sea serpents made their first appearance in World of Warcraft: Cataclysm in the Kelp'thar Forest of Vashj'ir. They shouldn't be confused with the gigantic eels that also roam the areas.


  • Baku is a reference to Bakunawa, a dragon or sea serpent from Philippine mythology who is believed to cause eclipses by attempting to swallow the moon.[6]
  • Baku's character originated from when Blizzard needed artwork of a giant snake for a different card. The artist sent back art of a large python coiled around a tree, but the outsource manager stated that they'd need a bigger snake than that. The artist, "feeling saucy", responded by sending back artwork of a snake bigger than an entire village, and since Blizzard "needed some badass art for Genn's Odd-nemesis", the artwork ended up being promoted from a generic card to a legendary in the form of Baku the Mooneater.[7]
  • At the onset of the Year of the Dragon, Baku joined The WitchwoodGenn Greymane, The WitchwoodBlack Cat, The WitchwoodGlitter Moth, The WitchwoodGloom Stag, and The WitchwoodMurkspark Eel as the first non-Classic cards to rotate into the Hall of Fame.
    • They are also the first and only so far to be rotated a year early.
  • Baku the Mooneater was a part of Patch, an April Fools 2022 prank, with the announced cost change from 9 to 8 and a Dev Comment "Baku and Genn should always be a mainstay of competitive Wild, but we've recently seen them fall off in favor of stronger strategies. Buffing both of them should bring these strategies back to relevance and really open up the format."


Patch changes[]

Commentary: Baku and Genn are powerful cards that have promoted new strategies since their introduction in the metagame. Those strategies have been more prevalent than we’d intended in Standard, and we felt that they might end up overshadowing what we're going to introduce in the Year of the Dragon. In order for set rotation to breathe new life into Standard and maintain overall health of the ladder, we are rotating Baku and Genn into the Hall of Fame a year earlier than normal.


  1. https://www.youtube.com/watch?v=Ii0XqLi3c5k&t=39m34s
  2. Mike Donais. (2018-03-12). Reddit. 
  3. Mike Donais. (2018-03-12). Reddit. 
  4. Mike Donais. (2018-03-12). Reddit. 
  5. Daxxarri (2018-03-12). Be Ready to Brave The Witchwood. Retrieved on 2018-03-30.
  6. 6.0 6.1 Mike Donais. (2018-03-12). Reddit. 
  7. 7.0 7.1 Hadidjah Chamberlin. (2018-04-10). Reddit. Retrieved on 2018-04-10.
  8. Daxxarri (2018-04-25). The Witchwood – Mysterious Missives Part 3. Retrieved on 2018-04-25.