Is Shifty Doppelganger legal in Standard, Modern, and Commander?

Shifty Doppelganger is legal in: Legacy, Vintage, Commander.

Shifty Doppelganger

Q: What type of card is Shifty Doppelganger?

Shifty Doppelganger is a Creature — Shapeshifter. Its oracle text reads: "{3}{U}, Exile this creature: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return this card to the battlefield."

Creature — Shapeshifter

, Exile this creature: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return this card to the battlefield.