Is Voltaic Key legal in Standard, Modern, and Commander?

Voltaic Key is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Voltaic Key?

Voltaic Key is an Artifact. Its oracle text reads: "{1}, {T}: Untap target artifact. *The missing piece to every puzzle.*"

Artifact

, : Untap target artifact.

*The missing piece to every puzzle.*

Set Magic 2011

Rarity Uncommon

Mana Value 1

Artist Franz Vohwinkel

Collector # 219

Scryfall

Artifact Modern Commander Legacy