Dreadmalkin 
Creature — Zombie Cat
Menace (This creature can't be blocked except by two or more creatures.)
, Sacrifice another creature or planeswalker: Put two +1/+1 counters on this creature.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL