Is The Scarab God legal in Standard, Modern, and Commander?

The Scarab God is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is The Scarab God?

The Scarab God is a Legendary Creature — God. Its oracle text reads: "At the beginning of your upkeep, each opponent loses X life and you scry X, where X is the number of Zombies you control. {2}{U}{B}: Exile target creature card from a graveyard. Create a token that's a copy of it, except it's a 4/4 black Zombie. When The Scarab God dies, return it to its owner's hand at the beginning of the next end step."