A going 2nd build I'm working on for my locals
The main theory of the deck is that Onslaught can act as a starter for bringing out any card in your deck, depending on what you draw in the hand (if no fraktall, special summon kitt, etc.)
TTT, Droplet, and Kurikara are there to help with breaking boards, and I feel like the engines do a good job of clearing opponent's boards
The side deck is composed of countering cards I see at locals, they can be replaced with whatever you think fits