Glen Elendra Archmage is a rare Creature — Faerie Wizard card from Wilds of Eldraine Commander (WOC), collector number 94. Current market price: $10.70, TCGplayer market prices via Scryfall.
Flying {U}, Sacrifice this creature: Counter target noncreature spell. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)