Is Sphinx's Herald legal in Standard, Modern, and Commander?

Sphinx's Herald is legal in: Modern, Legacy, Vintage, Commander.

Sphinx's Herald

Q: What type of card is Sphinx's Herald?

Sphinx's Herald is an Artifact Creature — Vedalken Wizard. Its oracle text reads: "{2}{U}, {T}, Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle."

Artifact Creature — Vedalken Wizard

, , Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle.