I've made some pretty big changes and I think this list is pretty close. 17 non-engine is exactly where I want it and the main deck is super tight.
The linear combo is quite simple (Check Youtube Link) but the interaction is layered and the follow up is great. We have 12 one card combos that center around the field spell. The Genni Maid of Endymion Line is slightly different than the rest but all lead to a very similar end board.
The side board is where this deck really shines: Access to the Magistus Zoroa Synchro gives us a D-Barrier on legs, and because this deck doesn't actually need its normal summon we can play lava golem as well. Surprisingly Macro type effects are also not the end of the world for this deck. Being able to fuse with banished spellcasters means that Retaliating "C" can be played with careful gameplay.
The Extra deck is tight, between Super Poly and the Magistus cards. Depending on the format the targets for those 2 engines could be cut or changed.
Please try this deck out! I truly believe this is the most playable version of Witchcrafters yet and I can't wait to bring this to events.