Frenetic Efreet is a rare Creature — Efreet card from World Championship Decks 1997 (WC97), collector number jk264. Current market price: $1.33, TCGplayer market prices via Scryfall.
Flying {0}: Flip a coin. If you win the flip, this creature phases out. If you lose the flip, sacrifice this creature. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)