Is Catharsis legal in Standard, Modern, and Commander?

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

What type of card is Catharsis?

Catharsis is a Creature — Elemental Incarnation. Its oracle text reads: "When this creature enters, if {W}{W} was spent to cast it, create two 1/1 green and white Kithkin creature tokens. When this creature enters, if {R}{R} was spent to cast it, creatures you control get +1/+1 and gain haste until end of turn. Evoke {R/W}{R/W} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)"