During your turn, whenever an allied effect returns 1 or more cards to a player's hand, subtract X from the cost of this card. X equals the number of cards returned.
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When this follower leaves play, summon a Wimael, Redolent Enforcer. (Transformation doesn't count as leaving play.)

(Same as the unevolved form.)

Accelerate (0): Destroy an enemy follower.
(Can only Accelerate if you've played at least 4 cards this turn.)
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Storm.
Bane.
Fanfare: Summon 3 White Tigers and evolve them.

(Same as the unevolved form, excluding Fanfare.)

Accelerate (3): Summon an Oberon.
(Can only Accelerate if you've played at least 30 cards this match.)
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Ward.
Fanfare: Evolve this follower.

Storm.
Ward.
Can attack 2 times per turn.

Accelerate (1): Return an allied follower or amulet to your hand. Deal 3 damage to a random enemy follower.
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Ward.
Fanfare: Gain +X/+Y. X and Y equal the number of other allied cards played this match split randomly.

Ward.
Evolve: Deal a pool of Z damage divided between all enemies. Z equals this follower's attack.