Is Fear of Immobility legal in Standard, Modern, and Commander?

Fear of Immobility is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Fear of Immobility

Q: What type of card is Fear of Immobility?

Fear of Immobility is an Enchantment Creature — Nightmare. Its oracle text reads: "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.)"

Enchantment Creature — Nightmare

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.)

Set Duskmourn: House of Horror

Rarity Common

Mana Value 5

Artist Martin de Diego Sádaba

Collector # 10

Scryfall Gatherer