Duskmourn: House of Horror

Enchantment Creature — Nightmare

As an additional cost to cast this spell, exile a creature you control.
Flying
When this creature enters, exile target creature an opponent controls.
When this creature leaves the battlefield, put each card exiled with it into its owner's hand.

Fear of Abduction

Under the Skin

Manifest

Sorcery

Manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)
You may return a permanent card from your graveyard to your hand.

Flying, lifelink
This creature can't block.
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, you may return this card from your graveyard to your hand.

Fear of Infinity

Duskmourn: House of Horror Commander

Scheme

When you set this scheme in motion, any number of target players each discard their hands. Each opponent draws cards equal to the number of cards that player discarded minus one. Then if you discarded a card this way, draw seven cards.