Derevi, Empyrial Tactician [Commander 2013] Kithkin Advisor each defending player chooses any

each defending player chooses any number of creatures they control and divides them into a number of piles equal to the number of attacking creatures for whom that player is the defending player

Pay 1 life: Exile the top card of your library face down

Being engulfed is just the beginning of the nightmare

At the beginning of the end step

Derevi, Empyrial Tactician [Commander 2013] Kithkin Advisor each defending player chooses anySet: 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.