Is Plated Onslaught legal in Standard, Modern, and Commander?

Plated Onslaught is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Plated Onslaught?

Plated Onslaught is an Instant. Its oracle text reads: "Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Creatures you control get +2/+1 until end of turn. *"Witness the glory of true, unwavering unity." —Ajani*"