Alchemist's Greeting is a common Sorcery card from Eldritch Moon (EMN), collector number 116. Current market price: $0.06 (foil $0.40), TCGplayer market prices via Scryfall.
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.)