Is Alchemist's Greeting legal in Standard, Modern, and Commander?

Alchemist's Greeting is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Alchemist's Greeting?

Alchemist's Greeting is a Sorcery. Its oracle text reads: "Alchemist's Greeting deals 4 damage to target creature. Madness {1}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)"