msem-instigator

When Confining Priest enters the battlefield, exile another target creature with power 4 or less until Confining Priest leaves the battlefield. (That creature returns under its owner's control.)

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

At the beginning of your upkeep, if you don't control any Imps, you may pay {B}. If you do, create a 1/1 black Imp creature token.
Sacrifice a creature: Each opponent loses 1 life.

As an additional cost to cast this spell, sacrifice a creature.
Search your library for a creature card that shares a creature type with the sacrificed creature with mana value less than or equal to X plus the sacrificed creature's mana value, put it onto the battlefield, then shuffle.

Embellish {3}{B} (If you cast this spell for {3}{B}, create a 1/1 blue Thopter artifact creature token with flying when it enters the battlefield.)
Tidehollow Lich can't block.
You may cast Tidehollow Lich from your graveyard as long as you control an artifact creature.

Whenever another artifact is put into your graveyard from the battlefield, each opponent loses 1 life and you gain 1 life.