Is Swallowed by Leviathan legal in Standard, Modern, and Commander?

Swallowed by Leviathan is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Swallowed by Leviathan?

Swallowed by Leviathan is an Instant. Its oracle text reads: "Choose target spell. Surveil 2, then counter the chosen spell unless its controller pays {1} for each card in your graveyard. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)"

Swallowed by Leviathan

Instant

Choose target spell. Surveil 2, then counter the chosen spell unless its controller pays for each card in your graveyard. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)