Derevi, Empyrial Tactician 186 (Commander 2013)

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.

NM - $13.90
LP - $11.20
MP - $8.40
HP - $5.60
DMG - $2.80