Cauldron of Souls [Shadowmoor] Commander Anthology Set: Invasion Type: Enchantment Rarity:

Set: Invasion Type: Enchantment Rarity: Rare Cost: {4}{B} Whenever a creature enters the battlefield

Set: Amonkhet Type: Legendary Artifact Rarity: Uncommon Cost: {3} White creature spells you cast cost {1} less to cast

Set: Hour of Devastation Prerelease Promos Type: Legendary Creature — God Rarity: Mythic Cost: {3}{B}{R} Whenever a creature with a -1/-1 counter on it dies

Iroas isn't a creature

you may put its +1/+1 counters on target artifact creature

Cauldron of Souls [Shadowmoor] Commander Anthology Set: Invasion Type: Enchantment Rarity:Set: Shadowmoor Type: Artifact Rarity: Rare Cost: {5} {T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no 1 1 counters on it, return it to the battlefield under its owner's control with a 1 1 counter on it.)