The Scarab God The Scarab God is an absolute powerhouse of a commander that can be built in a few different directions
Since Commander's a singleton format to begin with (with exceptions like basics, Rat Colony, Shadowborn Apostle, and others), you can return all the permanents in your graveyard to the battlefield with this sorcery during the late game to finalize your win
However, while it would be a fine inclusion, I've not seen any evidence that players are picking Rain of Gore up to play it in that deck
You need to figure out how the pieces work together, and how to make it run most efficently
The Bob Ross MTG collection is now available for pre-order on the Secret Lair website as of November 30, and will continue to be available for pre-order through December 14
Just be aware that players who play competitively will build the minimum requirement to raise their odds of drawing their best cards