Bloodhall Ooze 
Creature — Ooze
At the beginning of your upkeep, if you control a black permanent, you may put a +1/+1 counter on this creature. At the beginning of your upkeep, if you control a green permanent, you may put a +1/+1 counter on this creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL