Is Underworld Charger legal in Standard, Modern, and Commander?

Underworld Charger is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Underworld Charger

Q: What type of card is Underworld Charger?

Underworld Charger is a Creature — Nightmare Horse. Its oracle text reads: "This creature can't block. Escape—{4}{B}, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.) This creature escapes with two +1/+1 counters on it. Power/Toughness: 3/3"