Derevi, Empyrial Tactician [Commander 2013] Two-Headed Giant Tournament At the beginning of each

At the beginning of each opponent's upkeep

Any player may activate this ability

Set: Arena League 1999 Type: Basic Land — Forest Rarity: Rare ({T}: Add {G}

Within the walls of the floating city

Set: Revised Edition Type: Instant Rarity: Uncommon Cost: {W} Exile target creature

Derevi, Empyrial Tactician [Commander 2013] Two-Headed Giant Tournament At the beginning of eachSet: Commander 2013 Type: Legendary Creature Bird Wizard Rarity: Mythic Cost: {G}{W}{U} Flying Whenever Derevi, Empyrial Tactician enters the battlefield or 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.