Is Reinforcements legal in Standard, Modern, and Commander?

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

What type of card is Reinforcements?

Reinforcements is an Instant. Its oracle text reads: "Put up to three target creature cards from your graveyard on top of your library."

Instant

Put up to three target creature cards from your graveyard on top of your library.

Set Alliances

Rarity Common

Artist Diana Vick

Instant Commander Pauper Legacy