Is Nivix Cyclops legal in Standard, Modern, and Commander?

Nivix Cyclops is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Nivix Cyclops

Q: What type of card is Nivix Cyclops?

Nivix Cyclops is a Creature — Cyclops. Its oracle text reads: "DefenderWhenever you cast an instant or sorcery spell, Nivix Cyclops gets +3/+0 until end of turn and can attack this turn as though it didn't have defender."

Creature — Cyclops

Defender<br>Whenever you cast an instant or sorcery spell, Nivix Cyclops gets +3/+0 until end of turn and can attack this turn as though it didn't have defender.

Set Pioneer Masters

Rarity Common

Artist Wayne Reynolds