Is Galvanic Bombardment legal in Standard, Modern, and Commander?

Galvanic Bombardment is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Galvanic Bombardment

Q: What type of card is Galvanic Bombardment?

Galvanic Bombardment is an Instant. Its oracle text reads: "Galvanic Bombardment deals X damage to target creature, where X is 2 plus the number of cards named Galvanic Bombardment in your graveyard. *Geist-powered devices have no shortage of fuel.*"