This feels like the old Haakon, Stromgald Scourge combo lists that tried to abuse Basal Sliver and Skeletal Changeling.

There are definitely other combo lines that should play nice with this - Ashes of the Fallen would let you combo with Wild Cantor or Myr Moonvessel, Skirk Prospector/Universal Automaton would offer a second combo line for non-bombardment.

Enduring Renewal. I love the card, It is jank. The 'reveal your hand' is a massive drawback. Similarly, Kethis, the Hidden Hand felt close to working for similar but didn't quite.

Brilliant suggestions lagotripha! I totally forgot about Ashes of the Fallen. You gave me some great stuff to work with. I’m going to tinker with this build and try to streamline it!

You could consider adding a Pitiless Plunderer, so that you can also combo off with Gravecrawler.

CommanderNeyo, thanks for your suggestion!!! I’ve added a couple Pitiless Plunderer as a back-up wincon. Now this deck has even more ways to achieve an infinite combo!

I'm in Br. The problem is that you have a bunch of cards that don't do anything til you go off, like you're playing EDH in modern. Your opponent has a plan and modern is fast right now. It's cool you've got Moonvessel and Ashes but that's just extra crap you need to go off. You need interaction to slow them down.

I run both Carrion Feeder and Champion of the Perished because they both get triggered and you can Temur Battle Rage or Kazuul's Fury  ^Flip without the main combo (because Gravecrawler can still put in work). I play a lot more interaction than 2 Ending so Dreadhorde Arcanist is big because it can also get us Profane Command to find combo pieces. Arcanist also gives us second chance TBR and KFury.

Refine. Add interaction.

Thanks for your comment and suggestions jacobpmesser! You are right about needing more interaction. And I did approach it from an EDH perspective. It was meant to be a janky glass cannon hehe. But you’ve inspired me to go back and revisit this build!