Hixus, Prison Warden [Magic Origins] Magic 2015 Set: Champs and States Type:

Set: Champs and States Type: Creature — Elf Warrior Rarity: Rare Cost: {1}{G} Each other Warrior creature you control enters the battlefield with an additional +1/+1 counter on it

They can't be regenerated

Set: Ixalan Prerelease Promos Type: Creature — Merfolk Warrior Rarity: Rare Cost: {3}{U} Creatures you control with +1/+1 counters on them can't be blocked

If you cast it any time a sorcery couldn't have been cast

Hixus, Prison Warden [Magic Origins] Magic 2015 Set: Champs and States Type:Set: Magic Origins Type: Legendary Creature Human Soldier Rarity: Rare Cost: {3}{W}{W} Flash (You may cast this spell any time you could cast an instant.) Whenever a creature deals combat damage to you, if Hixus, Prison Warden entered the battlefield this turn, exile that creature until Hixus leaves the battlefield. (That creature returns under its owner's control.)