Poultrygeist 
Creature — Bird Spirit
Flying Whenever a creature dies, you may roll a six-sided die. If you roll a 1, sacrifice this creature. Otherwise, put a +1/+1 counter on this creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL