Is Simulacrum legal in Standard, Modern, and Commander?

Simulacrum is legal in: Legacy, Vintage, Commander.

Simulacrum

Q: What type of card is Simulacrum?

Simulacrum is an Instant. Its oracle text reads: "You gain life equal to the damage dealt to you this turn. Simulacrum deals damage to target creature you control equal to the damage dealt to you this turn."

Instant

You gain life equal to the damage dealt to you this turn. Simulacrum deals damage to target creature you control equal to the damage dealt to you this turn.

Set Limited Edition Alpha

Rarity Uncommon

Artist Mark Poole