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This content is only for Solo Adventures.
Solo Adventures
The subject of this article is only available in Solo Adventures.
It is a part of limited content and does not appear in any other game modes.
The subject of this article is only available in Solo Adventures.
You might be looking for one of these cards: Arcane Keysmith, Mercenaries/Arcane Keysmith.


Cobalt Spellkin is a boss minion card, used by Jaina Proudmoore during Jaina's Resolution in Book of Heroes.

Appears in[]

Aethas Sunreaver

Cast spells[]

Despite the wording in the text, this version of Arcane Keysmith can only Discover then cast the following cards:

Counterspell
Flame Ward
Ice Barrier
Mirror Entity
Spellbender
Vaporize

Gallery[]

Arcane Keysmith full

Arcane Keysmith, full art

Patch changes

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