Castle of Dark Illusions and Pumpking

Kino chan.sankaku compex

Worm Xex listed as material on fusion, worm Yagan can be summoned in face-up attack or defense position, and you control other worm or face-down cards
Total Defense Shogun

Castle of Dark Mirages
Field Spell
When this card is activated: You can take 1 Zombie "Pump" monster from your Deck and either add it to your hand or send it to the GY. Once per turn, during the Standby Phase: Place 1 Pumpkin Counter on this card for each Zombie monster on the field. This card gains effects based on the number of Pumpkin Counters on cards you control.
1+: Zombie monsters you control gain 200 ATK/DEF for each Pumpkin Counter on cards you control.
3+: All monsters on the field and in the GYs become Zombie.
5+: Once per turn: You can target 1 Zombie monster in your GY; Special Summon it.
If this card would be destroyed, you can remove 1 Pumpkin Counter from a card you control instead.

Pumpemperor the Emperor of Ghosts
Zombie-Type/DARK/Level 9/ATK 2700/ATK 3000
Cannot be Normal Summoned/Set. You can Special Summon this card (from your hand or GY) by removing 2 Pumpkin Counters from cards you control. Once per turn: You can place Pumpkin Counters on cards you control equal to the number of Zombie monsters on the field. Remove Pumpkin Counters to boost atk of all monsters you control by 500 for each

Call of the Pumpkin
Continuous Trap
Once per turn, if you control a Zombie "Pump" monster: You target 1 "Zombie" monster in your GY; Special Summon it in Attack Position, and if you do, its DEF becomes 0.