Is Tome Scour legal in Standard, Modern, and Commander?

Tome Scour is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Tome Scour?

Tome Scour is a Sorcery. Its oracle text reads: "Target player mills five cards."

Sorcery

Target player mills five cards.

Set Pioneer Masters

Rarity Uncommon

Artist Steven Belledin

Sorcery Modern Pioneer Commander