Sothera, the Supervoid Ive seen people bemoaning Sothera, the Supervoid as another Grave Pact/Dictate of Erebos-style effect, but I think theres some nuance here
You now have to choose which copy of the Shadowspear you want to keep
The Core Lockdown Burn, as the name implies, is all about locking down the opponents ability to attack or otherwise enact any meaningful plays, all while they slowly die to effect damage from across the board
While Poliwrath and Pawmot can take a few hits thanks to their high HP, Druddigon is so far the best at dealing passive damage
"Dark Cavalry" - A Fusion Monster that can be Fusion Summoned with "Dark Magician" and any Warrior-Type monster
If you won a monster card in a slot that can increase all of your monsters' ATK and DEF every turn (I'm talking about Pumpking the King of Ghosts), use it here