Notes & Combos
This is a blind second endymion list that I used to get to max rank duelist cup with a 70 ish % winrate.
Some of the cards that I would consider swapping:
Lava Golem: The deck isn't reliant on normal summon, but sometimes you need it, so a kaiju could work.
Dark Ruler No More: replaceable with book of eclipse or skippable.
Knightmare Unicorn/Lyna the Light Charmer: replaceable with Zeus (Made with enemy Noir/Ariseheart), Wynn the Wind Charmer (reviving enemy baronne), or Apollousa.