Bloodhall Ooze is a rare Creature — Ooze card from Conflux (CON), collector number 59. Current market price: $0.50 (foil $1.78), TCGplayer market prices via Scryfall.
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.