Zacama, Primal Calamity might be the best creature in the whole deck
This means your opponents won't be able to destroy one of your gates between searching for it, putting it into play, and checking if you have 10 gates in play (but they can respond to the initial activation to keep you off 10 gates)
There is also such a thing as a chump attack swinging a smaller attacker into a huge blocker knowing your opponent will kill it
There are different play styles and you should adjust these numbers to better suit your goal
(And if hes out for that long, the sheer number of cards you will have drawn will be worth ittrust me.)
Drannith Magistrate The best STAX piece for EDH If you want to make enemies on the more casual EDH tables, play STAX, a deck packed with hate pieces with the singular goal of stopping everyone else from playing Magic