Derevi, Empyrial Tactician [Commander 2013] Frog Whenever you sacrifice a green

Whenever you sacrifice a green creature

" —Charles Colton

Set: Planar Chaos Type: Legendary Land Rarity: Rare Each land is a Swamp in addition to its other land types

Blue spells you cast cost {1} less to cast

and haste until end of turn

Derevi, Empyrial Tactician [Commander 2013] Frog Whenever you sacrifice a greenSet: 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.