Zombie Tearlaments!
There's a lot of overlap here that work way better than expected. Tear is crazy good at milling without using your normal summon. Here's some fun example interactions:
Tearlaments Havnis/Scheiren being able to make Dragonecro Nethersoul Dragon when Zombie World is on the field
Red-Eyes Zombie Dragon Lord can special Artifact Scythe from grave on your opponents turn to lock the extra deck, or Kitkallos to send on their turn
Reinoheart can trigger Vampire Sucker
One change I considered making was dropping a Scream for a third Zombie World, but that might be some confirmation bias from milling both zombie worlds in the top 20 cards
Best normal summons are Uni-Zombie followed by Reinoheart, ideal end board ends on 3/4 negates and a scythe lock
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