
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."
Mari, the Killing Quill has 3 printings, first in New Capenna Commander (2022). EDHREC ranks it #2,641 among Commander cards. It appears most in Ezio Auditore da Firenze decks (10,492 on EDHREC). 1 public deck on TCG runs it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.