Notes & Combos
I decided to use a 'medium' mathmech engine, because the small one isn't worth that much and the big one is just a win more and has two more bricks (and at this point is better using a mathmech deck).
"Medium" Engine Mathmech + Starter Endboard: Arrival with Danmari/Pegasus + Heatsoul + Superfactorial
I use Circular to bait handtraps, search extenders or force interactions with Light Dragon before I start the Ignister combo. If there are no handtraps going first, I do the superfactorial combo.
I don't run Link Spider because I end up using Light Dragon more often with Circular, Nibiru doesn't exist and can't hurt you.
If you think running one field it's too risky, you can run two. I usually don't want to see the field spell in my hand.