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Evelyn, the Covetous

Legendary Creature — Vampire Rogue

Flash Whenever Evelyn or another Vampire you control enters, exile the top card of each player's library with a collection counter on it. Once each turn, you may play a card from exile with a collection counter on it if it was exiled by an ability you controlled, and you may spend mana as though it were mana of any color to cast it.