Is Firebending Student legal in Standard, Modern, and Commander?

Firebending Student is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Firebending Student

Q: What type of card is Firebending Student?

Firebending Student is a Creature — Human Monk. Its oracle text reads: "Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Firebending X, where X is this creature's power. (Whenever this creature attacks, add X {R}. This mana lasts until end of combat.)"