Is Ertai, the Corrupted legal in Standard, Modern, and Commander?

Ertai, the Corrupted is legal in: Legacy, Vintage, Commander.

Ertai, the Corrupted

Q: What type of card is Ertai, the Corrupted?

Ertai, the Corrupted is a Legendary Creature — Phyrexian Human Wizard. Its oracle text reads: "{U}, {T}, Sacrifice a creature or enchantment: Counter target spell. *Altered by Phyrexian science, corrupted by black mana, and twisted by rage, Ertai still looked in the mirror and saw only glory.* Power/Toughness: 3/4"