Morty Grenmill, Rat Envoy

+2: Create a 1/1 Black Rat Creature Token with Deathtouch. Then, if you control three or more Rats, draw a card.
-3: You gain an emblem with "At the beginning of your upkeep, create X 1/1 Black Rat Creature Tokens with Deathtouch, where X= Rats you control +1.
-6: Return all Rat creatures from all graveyards to your battlefield. They gain Haste, Menace, and Deathtouch until the end of the turn.