First-Sphere Gargantua Unearthing out of the yard at Phyrexian Rager rate is probably not quite good enough, but you could do worse than First-Sphere Gargantua if you're looking to self-mill anyway
So you need to sacrifice something on a turn other than when you originally played it to make use of this, hoping to cast something very large
Looking at Golos on a macro-scale and reading Sheldon Menerys article on the banning, I began to understand why the general was not healthy for the format: With a five-color commander, you have no restriction on what you can play in your deck
It had eleven new TAG TEAM Pokmon cards, including the Gigantamax versions of the legendary Pokmon Zacian and Zamazenta
Blue decks ramping into Mufasa instead of Tamatoa is something to be ready for
Remember, Dingus Egg was restricted two months before the printing of Antiquities