At the beginning of your upkeep, put a despair counter on Descent into Madness, then each player exiles X permanents they control and/or cards from their hand, where X is the number of despair counters on Descent into Madness.
Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)As long as Pathbreaker Wurm is paired with another creature, both creatures have trample.
Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)Whenever Heirs of Stromkirk deals combat damage to a player, put a +1/+1 counter on it.
Equipped creature gets +2/+2, has flying, and is a white Angel in addition to its other colors and types.Equip (: Attach to target creature you control. Equip only as a sorcery.)
Whenever another creature you control enters, Kruin Striker gets +1/+0 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)
FlyingWhen Demonlord of Ashmouth enters, exile it unless you sacrifice another creature.Undying (When this creature 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.)