Is Possessed Barbarian legal in Standard, Modern, and Commander?

Possessed Barbarian is legal in: Legacy, Vintage, Commander.

Possessed Barbarian

Q: What type of card is Possessed Barbarian?

Possessed Barbarian is a Creature — Human Barbarian Horror. Its oracle text reads: "First strike Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1, is black, and has "{2}{B}, {T}: Destroy target red creature.""

Creature — Human Barbarian Horror

First strike

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1, is black, and has ", : Destroy target red creature."