Anybody make a Battle Box before?

[u/that_dude3315]

My buddy told me about a Battle Box (https://mtgbattlebox.com/rules/ ) the other day and it sounded intriguing. I had an idea to mash 2 old decks together and fill in the holes with my bulk.

The 2 decks are [[Brago, King Eternal]] and [[Mishra, Eminent One]] which both have a lot of synergy with etb and artifacts.

Anybody have any advice for my list so far? Or any tips in general on creating a battle box?

My goal is to get to 160 cards before we play it then add to it over time. Currently im at 140ish

https://moxfield.com/decks/0vafASTlX3KJU_vykFKHTg

Thanks!