Bloodvial Purveyor

Creature — Vampire

Flying, trample
Whenever an opponent casts a spell, that player creates a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.")
Whenever this creature attacks, it gets +1/+0 until end of turn for each Blood token defending player controls.

Illustrated by Fesbra

Innistrad: Crimson Vow (VOW)

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