Derevi, Empyrial Tactician is a rare Legendary Creature — Bird Wizard card from Secret Lair Drop (SLD), collector number 2787. Current market price: $7.42 (foil $15.43), TCGplayer market prices via Scryfall.
Flying When Derevi enters and whenever a creature you control deals combat damage to a player, you may tap or untap target permanent. {1}{G}{W}{U}: Put Derevi onto the battlefield from the command zone.