Fear of Immobility is a common Enchantment Creature — Nightmare card from Duskmourn: House of Horror (DSK), collector number 10. Current market price: $0.13 (foil $0.21), TCGplayer market prices via Scryfall.
When this creature enters, tap up to one target creature. If an opponent controls that creature, put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)