Oran-Rief Ooze is a rare Creature — Ooze card from Zendikar Rising Promos (PZNR), collector number 198p. Current market price: $0.49 (foil $0.82), TCGplayer market prices via Scryfall.
When this creature enters, put a +1/+1 counter on target creature you control. Whenever this creature attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.