Is Somnophore legal in Standard, Modern, and Commander?

Somnophore is legal in: Legacy, Vintage, Commander.

Somnophore

Q: What type of card is Somnophore?

Somnophore is a Creature — Illusion. Its oracle text reads: "Flying Whenever this creature deals damage to a player, tap target creature that player controls. That creature doesn't untap during its controller's untap step for as long as this creature remains on the battlefield."

Creature — Illusion

Flying

Whenever this creature deals damage to a player, tap target creature that player controls. That creature doesn't untap during its controller's untap step for as long as this creature remains on the battlefield.

Set Urza's Saga

Rarity Rare

Mana Value 4

Artist Andrew Robinson

Collector # 97

Scryfall Gatherer