Is Aether Vial legal in Standard, Modern, and Commander?

Aether Vial is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Aether Vial?

Aether Vial is an Artifact. Its oracle text reads: "At the beginning of your upkeep, you may put a charge counter on this artifact. {T}: You may put a creature card with mana value equal to the number of charge counters on this artifact from your hand onto the battlefield."