Fear of Sleep Paralysis
From Duskmourn: House of Horror Commander set
Fear of Sleep Paralysis
Enchantment Creature — Nightmare
6/6
Flying
Eerie — Whenever this creature or another enchantment you control enters and whenever you fully unlock a Room, tap up to one target creature and put a stun counter on it.
Stun counters can't be removed from permanents your opponents control. (They won't untap if they have stun counters.)