Is Hell Swarm legal in Standard, Modern, and Commander?

Hell Swarm is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Hell Swarm?

Hell Swarm is an Instant. Its oracle text reads: "All creatures get -1/-0 until end of turn."

Instant

All creatures get -1/-0 until end of turn.

Set Legends

Rarity Common

Artist Christopher Rush

Instant Commander Pauper Legacy