I totally love the idea of Tinyfin Fordling and his quest.
However, I find his battlecry strong, but lackluster for a quest. It's a strong drop, but a board clear would nullify it as anything else.
Not so much of a game-changer as it is for the Priest quest.
Maybe it could change your hero power to summon Murloc Knights?
Also, Tinyfin should cost less. or have higher stats.
Anyway, lovely idea.
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