Is Stupor legal in Standard, Modern, and Commander?

Stupor is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Stupor?

Stupor is a Sorcery. Its oracle text reads: "Target opponent discards a card at random, then discards a card."

Sorcery

Target opponent discards a card at random, then discards a card.

Set Mirage

Rarity Uncommon

Artist Mike Kimble

Sorcery Modern Commander Legacy