Is Transmutation legal in Standard, Modern, and Commander?

Transmutation is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Transmutation?

Transmutation is an Instant. Its oracle text reads: "Switch target creature's power and toughness until end of turn."

Instant

Switch target creature's power and toughness until end of turn.

Set Legends

Rarity Common

Artist Susan Van Camp

Instant Commander Pauper Legacy