Is Demonic Dread legal in Standard, Modern, and Commander?

Demonic Dread is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Demonic Dread

Q: What type of card is Demonic Dread?

Demonic Dread is a Sorcery. Its oracle text reads: "Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) Target creature can't block this turn."

Sorcery

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Target creature can't block this turn.

Set Alara Reborn

Rarity Common

Mana Value 3

Artist Thomas M. Baxa

Collector # 38

Scryfall Gatherer