Pack Rat 
Creature — Rat
Pack Rat's power and toughness are each equal to the number of Rats you control.
, Discard a card: Create a token that's a copy of this creature.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL