When Acererak enters, if you haven't completed Tomb of Annihilation, return Acererak to its owner's hand and venture into the dungeon. Whenever Acererak attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature of their choice.

Choose one — • Counter target artifact or enchantment spell. If a spell is countered this way, exile it instead of putting it into its owner's graveyard. • Counter target activated or triggered ability.

Flying, trample When this creature enters, you skip your next two turns.

This creature can't be blocked. When this creature enters, target opponent creates five 1/1 red Goblin creature tokens.

Replicate {U} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Counter target spell unless its controller pays {2}.

Menace When this creature enters, put two -1/-1 counters on target creature you control. Whenever another Zombie you control dies, each opponent loses 1 life.

Counter target activated ability, triggered ability, or legendary spell.

{T}: Add {C}. Whenever a legendary creature you control enters, you may have The Irencrag become a legendary Equipment artifact named Everflame, Heroes' Legacy. If you do, it gains equip {3} and "Equipped creature gets +3/+3" and loses all other abilities.

The Mindskinner can't be blocked. If a source you control would deal damage to an opponent, prevent that damage and each opponent mills that many cards.

Creatures entering don't cause abilities to trigger.