Is Stand Firm legal in Standard, Modern, and Commander?

Stand Firm is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Stand Firm

Q: What type of card is Stand Firm?

Stand Firm is an Instant. Its oracle text reads: "Target creature gets +1/+1 until end of turn. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)"

Instant

Target creature gets +1/+1 until end of turn. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Set Duel Decks: Heroes vs. Monsters

Rarity Common

Mana Value 1

Artist Matt Cavotta

Collector # 21

Scryfall Gatherer