Is Heart of Yavimaya legal in Standard, Modern, and Commander?

Heart of Yavimaya is legal in: Legacy, Vintage, Commander.

Heart of Yavimaya

Q: What type of card is Heart of Yavimaya?

Heart of Yavimaya is a Land. Its oracle text reads: "If Heart of Yavimaya would enter, sacrifice a Forest instead. If you do, put Heart of Yavimaya onto the battlefield. If you don't, put it into its owner's graveyard.{T}: Add {G}.{T}: Target creature gets +1/+1 until end of turn."

Land

If Heart of Yavimaya would enter, sacrifice a Forest instead. If you do, put Heart of Yavimaya onto the battlefield. If you don't, put it into its owner's graveyard.<br>: Add .<br>: Target creature gets +1/+1 until end of turn.