Prime Speaker Zegana is a mythic Legendary Creature — Merfolk Wizard card from Gatecrash (GTC), collector number 188. Current market price: $0.57 (foil $3.00), 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.