Is Tiefling Outcasts legal in Standard, Modern, and Commander?

Tiefling Outcasts is legal in: Historic.

Tiefling Outcasts

Q: What type of card is Tiefling Outcasts?

Tiefling Outcasts is a Creature — Tiefling Peasant. Its oracle text reads: "Double team (When this creature attacks, conjure a duplicate into your hand, then both of them perpetually lose double team.) Other Demons, Devils, Imps, and Tieflings you control get +1/+0. Power/Toughness: 1/1"