Is Dragon-Scarred Bear legal in Standard, Modern, and Commander?

Dragon-Scarred Bear is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper.

Dragon-Scarred Bear

Q: What type of card is Dragon-Scarred Bear?

Dragon-Scarred Bear is a Creature — Bear. Its oracle text reads: "Formidable — {1}{G}: Regenerate this creature. Activate only if creatures you control have total power 8 or greater. *Bears are a delicacy for the Atarka. The few that remain are the toughest of their species.* Power/Toughness: 3/2"