How's my deck? THTD and Bracchio-Radius are in my extra deck. I'm planning on replacing Ceal, Versago, and an Element Saurus with some Crawling Dragon #2 when I get them. I've been getting garbage Rex drops. I'm also trying to get Metalmorph, but I'm prioritizing getting Enemy Controller and the aforementioned Crawling Dragon #2.
I think uraby is better than elemental saurus because u can use otc on it. And remove that equip spell card.
When you get better cards you can improve your deck.
I want to add 2polimerization and 1 uraby to replace trakadon and the 2 elemental saurus, but i dont have it. It will be great if i could replace fusion weapon with econ or another otc.
I'd recommend keeping at least one Element Saurus. It's good for taking out Bubonic Vermin and 4-Star Ladybug. I can also see the advantage of replacing it, though. Otherwise, I'd say your idea is fairly solid.
Also, if you haven't already, you can get a free Polymerization from Joey's level-ups. The other two will be quite annoying to get, since you'll have to wait on the card trader.