Is Snort legal in Standard, Modern, and Commander?

Snort is legal in: Legacy, Vintage, Commander.

Snort

Q: What type of card is Snort?

Snort is a Sorcery. Its oracle text reads: "Each player may discard their hand and draw five cards. Then Snort deals 5 damage to each opponent who discarded their hand this way. Flashback {5}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)"