Evelyn, the Covetous Foil

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.