Is Soltari Crusader legal in Standard, Modern, and Commander?

Soltari Crusader is legal in: Legacy, Vintage, Commander.

What type of card is Soltari Crusader?

Soltari Crusader is a Creature — Soltari Knight. Its oracle text reads: "Shadow (This creature can block or be blocked by only creatures with shadow.) {1}{W}: This creature gets +1/+0 until end of turn. *"Carry war to the Dauthi, no matter the way, no matter the world." —Soltari battle chant* Power/Toughness: 2/1"