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

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

Zhalfirin Crusader

Q: What type of card is Zhalfirin Crusader?

Zhalfirin Crusader is a Creature — Human Knight. Its oracle text reads: "Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.){1}{W}: The next 1 damage that would be dealt to Zhalfirin Crusader this turn is dealt to any target instead."

Creature — Human Knight

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)<br>: The next 1 damage that would be dealt to Zhalfirin Crusader this turn is dealt to any target instead.

Set Visions

Rarity Rare

Artist Alan Rabinowitz