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

Dreadlight Monstrosity is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Dreadlight Monstrosity

Q: What type of card is Dreadlight Monstrosity?

Dreadlight Monstrosity is a Creature — Crab Horror. Its oracle text reads: "Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) {3}{U}{U}: This creature can't be blocked this turn. Activate only if you own a card in exile. Power/Toughness: 5/5"