Is Feral Shadow legal in Standard, Modern, and Commander?

Feral Shadow is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Feral Shadow?

Feral Shadow is a Creature — Nightstalker. Its oracle text reads: "Flying"

Creature — Nightstalker

Flying

Set Mirage

Rarity Common

Artist Cliff Nielsen

Creature Flying Commander Pauper Legacy