Is Giant's Skewer legal in Standard, Modern, and Commander?

Giant's Skewer is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Giant's Skewer

Q: What type of card is Giant's Skewer?

Giant's Skewer is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +2/+1. Whenever equipped creature deals combat damage to a creature, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)"

Artifact — Equipment

Equipped creature gets +2/+1.

Whenever equipped creature deals combat damage to a creature, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")