Lastly, note that "mana cost" was originally called "casting cost" up until the release of the Sixth Edition core set, which brought a number of important rules and terminology changes
You can very quickly build a massive army of zombies, which synergizes with The Scarab God's abilities to drain your opponents
To get to a place in which you can play it, though, youll need cards like Prismite and Prophetic Prism, which allow you to pay mana in order to gain mana of any colour, and Skittering Surveyor, which lets you look through your deck for a land card of your choice and put it in your hand
And this is all just the defensive capabilities of the card
I had high expectations for the gold cards in New Capenna , but looking through the file, it seems that they played it very safe with regard to most things three-color
Ulamog, the Infinite Gyre