Is Nova Hellkite legal in Standard, Modern, and Commander?

Nova Hellkite is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Nova Hellkite?

Nova Hellkite is a Creature — Dragon. Its oracle text reads: "Flying, haste When this creature enters, it deals 1 damage to target creature an opponent controls. Warp {2}{R} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)"

Nova Hellkite

Creature — Dragon

$1.20 ↗20 similarCommander, Modern

Flying, haste

When this creature enters, it deals 1 damage to target creature an opponent controls.

Warp (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)