Is Fire Sages legal in Standard, Modern, and Commander?

Fire Sages is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Fire Sages?

Fire Sages is a Creature — Human Cleric. Its oracle text reads: "Firebending 1 (Whenever this creature attacks, add {R}. This mana lasts until end of combat.) {1}{R}{R}: Put a +1/+1 counter on this creature. *"Things have changed. In the past, the sages were loyal only to the Avatar." —Fire Sage Shyu* Power/Toughness: 2/2"