Is Magus of the Mind legal in Standard, Modern, and Commander?

Magus of the Mind is legal in: Legacy, Vintage, Commander.

Magus of the Mind

Q: What type of card is Magus of the Mind?

Magus of the Mind is a Creature — Human Wizard. Its oracle text reads: "{U}, {T}, Sacrifice this creature: Shuffle your library, then exile the top X cards, where X is one plus the number of spells cast this turn. Until end of turn, you may play lands and cast spells from among cards exiled this way without paying their mana costs."

Creature — Human Wizard

, , Sacrifice this creature: Shuffle your library, then exile the top X cards, where X is one plus the number of spells cast this turn. Until end of turn, you may play lands and cast spells from among cards exiled this way without paying their mana costs.