Fear of Sleep Paralysis (Extended Art) (DSC-043) - Duskmourn: House of Horror Commander: (Extended Art, enchantment)

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.)