Inverter and U/W Control decks were already sort of in the market for cycling lands, and adding triomes can give the marginal upside of being able to Explosives for three, while also allowing those decks to up their land count to stick their otherwise inconsistent colors (something they cant do currently due to need for answer density) Thopter/Sword combo and Urza may not exist in Pioneer, which greatly suppresses the cards power, but it could help decks like Ensoul Artifact get back on stable footing
Instead of aiming for raw power and crushing your group as fast as possible, this list will help you pick out a commander that fits the spirit of Halloween
Theres a meta layer to this deck
Raiders' Spoils is at its best with evasive Warriors that can sidestep blockers, but the small power bump could be just enough to dissaude blockers anyway
If Eris was the first spell you cast this turn, the next spell you cast this turn is your second spell
10 Shanid, Sleepers' Scourge Legendary Cantrips While Shanid, Sleepers Scourge has less power than many other legendary-matters commanders, that doesnt mean that the Human Knight isnt a fun design space to build around