Is Recoup legal in Standard, Modern, and Commander?

Recoup is legal in: Legacy, Vintage, Commander.

Recoup

Q: What type of card is Recoup?

Recoup is a Sorcery. Its oracle text reads: "Target sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (Mana cost includes color.) Flashback {3}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)"