Is Brimstone Mage legal in Standard, Modern, and Commander?

Brimstone Mage is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Brimstone Mage?

Brimstone Mage is a Creature — Human Shaman. Its oracle text reads: "Level up {3}{R} ({3}{R}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 2/3 {T}: This creature deals 1 damage to any target. LEVEL 3+ 2/4 {T}: This creature deals 3 damage to any target."