The intention of this deck is to be a persistent danger that can survive anything from aggressive agro to constant board wipes. As your mana base grows you never really run out of things to do with it.

Panharmonicon and of of the EBT cards. Cogworker's Puzzleknot, Glassblower's Puzzleknot, Torrential Gearhulk, Combustible Gearhulk, Bedlam Reveler, Angel of Invention. Saheeli Rai also combos with it when there is something worth copying already in play, sometimes even the Glassblower items are worthwhile; remember to double the triggers of the clone you make! A few things to note: Bedlam Reveler triggering twice isn't really great, but you can sneak a bonus card out of it if there's an instant in your first batch. Also, this deck is fully capable of milling itself, be advised! Perpetual Timepiece is a nice one of in that circumstance. You can use it to make Bedlam Reveler cheaper, and filter the lands out of your deck over time. I feel like there's enough scry that you aren't likely to miss lands drops often at all. The cards which you would leave out when you do decide to use its exile ability are: Lands of any kind, Harnessed Lightning, Servo Exhibition, Cogworker's Puzzleknot, Glassblower's Puzzleknot, Gearseeker Serpent; this will ensure you're drawing your best cards (again) most often, and removes the weakest aspect of the deck as a whole in one lump sum. Great times to use this are when you can Glimmer of Genius or Combustible Gearhulk right after. Some very technical stuff: Torrential Gearhulk's doubled ability will allow you to use Insidious Will to copy the other spell you cast if you layer them correctly.

The two of them Chandra, Torch of Defiance + Saheeli Rai have a nice interaction on their +1 abilities, if you were looking to scry before exiling the top card as a bonus spell that turn. Alternatively the mana ramp ability of Chandra, Torch of Defiance will help if you need to play both countermagic as well as a crucial puzzle piece creature/artifact when you intend to use Saheeli Rai's -2: Angel of Invention, Combustible Gearhulk, Gearseeker Serpent, Cogworker's Puzzleknot, Panharmonicon, Bedlam Reveler, Torrential Gearhulk, Perpetual Timepiece. Also, post board wipe and out of gas you can use it to double up on Wandering Fumarole or Needle Spires. The deck needs to be able to constantly dig to more dig, so these two are perfect planeswalkers for the occasion.

16 spells, Servo Exhibition makes 3 artifacts overall instead of just 1 per spell. The goal is to leave 5 mana open once you hit 6 artifacts, since it's unclear how long the board state will let you use it as a massive regrowth. Obviously best on the opponent's turn so you have fresh mana to avoid too many discards. The earlier plan involving Perpetual Timepiece will ensure that you have at least some things in your graveyard.