Is Scab-Clan Charger legal in Standard, Modern, and Commander?

Scab-Clan Charger is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper.

Scab-Clan Charger

Q: What type of card is Scab-Clan Charger?

Scab-Clan Charger is a Creature — Centaur Warrior. Its oracle text reads: "Bloodrush — {1}{G}, Discard this card: Target attacking creature gets +2/+4 until end of turn. *"The only roads I wish to see are those beaten flat by wild hooves."* Power/Toughness: 2/4"