Is Ursine Monstrosity legal in Standard, Modern, and Commander?

Ursine Monstrosity is legal in: Legacy, Vintage, Commander.

Ursine Monstrosity

Q: What type of card is Ursine Monstrosity?

Ursine Monstrosity is a Creature — Bear Mutant. Its oracle text reads: "Trample At the beginning of combat on your turn, mill a card and choose an opponent at random. This creature attacks that player this combat if able. Until end of turn, this creature gains indestructible and gets +1/+1 for each card type among cards in your graveyard."

Creature — Bear Mutant

Trample

At the beginning of combat on your turn, mill a card and choose an opponent at random. This creature attacks that player this combat if able. Until end of turn, this creature gains indestructible and gets +1/+1 for each card type among cards in your graveyard.

Set Duskmourn: House of Horror Commander

Rarity Rare

Mana Value 3

Artist Carlos Palma Cruchaga

Collector # 36

Scryfall Gatherer