Is Pit Imp legal in Standard, Modern, and Commander?

Pit Imp is legal in: Legacy, Vintage, Commander, Pauper.

Pit Imp

Q: What type of card is Pit Imp?

Pit Imp is a Creature — Imp. Its oracle text reads: "Flying {B}: This creature gets +1/+0 until end of turn. Activate no more than twice each turn. *The moans of the Death Pits were underscored by the chattering of imps, for whom the ship was cause for much discussion.* Power/Toughness: 0/1"