Fear of Sleep Paralysis is a rare Enchantment Creature — Nightmare card from Duskmourn: House of Horror Commander (DSC), collector number 12. Current market price: $0.40, TCGplayer market prices via Scryfall.
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.)