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 - $10.10
LP - $8.10
MP - $6.10
HP - $4.00
DMG - $2.20