Is Summoning Materia legal in Standard, Modern, and Commander?

Summoning Materia is legal in: Legacy, Vintage, Commander.

Summoning Materia

Q: What type of card is Summoning Materia?

Summoning Materia is an Artifact — Equipment. Its oracle text reads: "You may look at the top card of your library any time. As long as this Equipment is attached to a creature, you may cast creature spells from the top of your library. Equipped creature gets +2/+2 and has vigilance and "{T}: Add {G}." Equip {2}"