Is Krovikan Elementalist legal in Standard, Modern, and Commander?

Krovikan Elementalist is legal in: Legacy, Vintage, Commander.

What type of card is Krovikan Elementalist?

Krovikan Elementalist is a Creature — Human Wizard. Its oracle text reads: "{2}{R}: Target creature gets +1/+0 until end of turn.{U}{U}: Target creature you control gains flying until end of turn. Sacrifice it at the beginning of the next end step."

Krovikan Elementalist

Creature — Human Wizard

: Target creature gets +1/+0 until end of turn.<br>: Target creature you control gains flying until end of turn. Sacrifice it at the beginning of the next end step.