Is Burning Curiosity legal in Standard, Modern, and Commander?

Burning Curiosity is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Burning Curiosity

Q: What type of card is Burning Curiosity?

Burning Curiosity is a Sorcery. Its oracle text reads: "As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counter on a creature you control.) Exile the top two cards of your library. If this spell's additional cost was paid, exile the top three cards instead. Until the end of your next turn, you may play those cards."

Sorcery

$0.15 ↗20 similarCommander, Modern

As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counter on a creature you control.)

Exile the top two cards of your library. If this spell's additional cost was paid, exile the top three cards instead. Until the end of your next turn, you may play those cards.

Set Lorwyn Eclipsed

Rarity Common

Mana Value 3

Artist Jim Pavelec

Collector # 129