Derevi, Empyrial Tactician [Commander 2013] RC1 Each land with an activated

Each land with an activated ability that isn't a mana ability doesn't untap during its controller's untap step

Set: The Infinity Chasers Card type: Effect Monster Rarity: Secret Rare Attack: 1000 Defense: 2800 During damage calculation

up to the number of Xyz Materials with different names attached to this card

Set: Shadowmoor Type: Enchantment Rarity: Rare Cost: {1}{W} Other enchantments you control have shroud

Set: Limited Edition Alpha Type: Creature — Merfolk Rarity: Rare Cost: {U}{U} Other Merfolk get +1/+1 and have islandwalk

Derevi, Empyrial Tactician [Commander 2013] RC1 Each land with an activatedSet: 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.