The List

Crosis, the Purger

Flying
Whenever Crosis, the Purger deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals their hand and discards all cards of that color.

Commander 2017

Flying
Whenever Crosis, the Purger deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals his or her hand and discards all cards of that color.

Premium Deck Series: Graveborn

Invasion

Flying
Whenever Crosis, the Purger deals combat damage to a player, you may pay o2o
B. If you do, choose a color. That player reveals his or her hand and discards all cards of that color from it.