Prime Speaker Zegana is a rare Legendary Creature — Merfolk Wizard card from Ravnica Remastered (RVR), collector number 211. Current market price: $0.45 (foil $0.70), TCGplayer market prices via Scryfall.
Prime Speaker Zegana enters with X +1/+1 counters on it, where X is the greatest power among other creatures you control. When Prime Speaker Zegana enters, draw cards equal to its power.