Is Phenax, God of Deception legal in Standard, Modern, and Commander?

Phenax, God of Deception is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Phenax, God of Deception

Q: What type of card is Phenax, God of Deception?

Phenax, God of Deception is a Legendary Enchantment Creature — God. Its oracle text reads: "IndestructibleAs long as your devotion to blue and black is less than seven, Phenax isn't a creature.Creatures you control have "{T}: Target player mills X cards, where X is this creature's toughness.""

Legendary Enchantment Creature — God

Indestructible<br>As long as your devotion to blue and black is less than seven, Phenax isn't a creature.<br>Creatures you control have ": Target player mills X cards, where X is this creature's toughness."