Is Abstruse Archaic legal in Standard, Modern, and Commander?

Abstruse Archaic is legal in: Legacy, Vintage, Commander.

Abstruse Archaic

Q: What type of card is Abstruse Archaic?

Abstruse Archaic is a Creature — Avatar. Its oracle text reads: "Vigilance {1}, {T}: Copy target activated or triggered ability you control from a colorless source. You may choose new targets for the copy. (Mana abilities can't be targeted.) *Unburdened from mortality, archaics wander the Vastlands seeking knowledge only they can comprehend.* Power/Toughness: 3/4"

Creature — Avatar

Vigilance

, : Copy target activated or triggered ability you control from a colorless source. You may choose new targets for the copy. (Mana abilities can't be targeted.)