3 is your lucky number

The 3rd, and hopefully, final version of Praxis “deadly damage” synergy.

Deadly and double damage turn most of your units into engines of destruction. So Touch of Battle and Catalyze are the MVP cards here. Autotread is still good despite the nerf.

The fact that the deck ends up with 3 copies of most cards is a pure coincidence of optimisation. Feel free to move things around according to your needs.
Jekk is technically a 4-drop. You almost never want to play him on 3 mana unless you give him Charge with Display of Realities, which could be a desperate measure against unitless control decks. Other than that, ideally you want to remove at least one enemy unit with him when played. This also applies to Tripwire Grenadin, but that one is mostly used to deal with enemy tokens or to pop an Aegis.

Gift of the Daimyo enables all of your discard engines, but you might draw something useful with it too.

This deck gets destroyed by Grand Suppressor and Doctor Zytrom, so there's not much you can do against them other than silence or hope you play bigger units and draw better weapons with Gift of the Daimyo. You might also get lucky with Killer and Double Damage.