Mari, the Killing Quill

Mari, the Killing Quill

Legendary Creature - Vampire Assassin | Power/Toughness: 3 / 2 (CMC 3)
Whenever a creature an opponent controls dies, exile it with a hit counter on it.
Assassins, Mercenaries, and Rogues you control have deathtouch and "Whenever this creature deals combat damage to a player, you may remove a hit counter from a card that player owns in exile. If you do, draw a card and create two Treasure tokens."