Notes & Combos
Beatrice = Zombie World & Balerdroch. FTK against decks like Rikka and it's usually enough to outgrind weaker decks.
You can make another disruptions like Wolfrayet, Cicada King, or Totem Bird on top.
Make Immortal Dragon to dump Mezuki (target Immortal Dragon or Necroworld Banshee) for synchro 7/8 plays or if Beatrice gets negated.
This is a very budget friendly deck because the only required (non-staple) UR is Beatrice & Balerdroch. Zombie World is obtainable from a structure pack. Cicada King is the next best UR, and it is from legacy packs.
If you don't have any good 7/8 Synchros, cut Mezuki & Immortal Dragon for a Pot of Prosperity/Desires.