Derevi, Empyrial Tactician [Commander 2013] Enchantment It's a matter of strength

It's a matter of strength

{U}: Counter target spell with the chosen name

Set: Magic 2011 Promos Type: Creature — Ooze Rare Cost: {4}{G} When Mitotic Slime dies

" —Ajani Goldmane

Set: Unlimited Edition Type: Artifact Uncommon Cost: {4} {1}

Derevi, Empyrial Tactician [Commander 2013] Enchantment It's a matter of strengthSet: Commander 2013 Type: Legendary Creature Bird Wizard 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.