Is Charging Binox legal in Standard, Modern, and Commander?

Charging Binox is legal in: Legacy, Vintage, Commander, Pauper.

Charging Binox

Q: What type of card is Charging Binox?

Charging Binox is a Creature — Beast. Its oracle text reads: "Assist (Another player can pay up to {7} of this spell's cost.) Trample *Arena beasts are bred for flashiness and foul temper. An extra head addresses both requirements.* Power/Toughness: 7/5"