Combos

Diviner of the Herald 1-card

1. Normal Summon Diviner of the Heralds

2. Send Herald of the Arc Light, search for Nekroz of Brionac (Diviner is now Level 6)

3. Use Nekroz of Brionac to search Nekroz of Clausolas, which then searches Nekroz Cycle

4. Use Nekroz Cycle to tribute Diviner of the Heralds for Nekroz of Brionac.

5. Use Diviner's effect to Special Summon Cyber Egg Angel and search Ritual Sanctuary.

DB Replay

If you have a Spell in hand that you don't need, discard it with Ritual Sanctuary to search for a LIGHT Ritual Monster or Ritual Spell. This gives enough spells in grave to re-summon Diviner of the Heralds and Synchro Summon a Herald of the Arc Light, thus giving you an omninegate with "1.5" cards.

Nekroz of Brionac or Unicore can be used to extend this combo and guarantee a spell in grave. For instance, having Unicore means you can search Kaleidoscope with Brionac + Clausolas instead, delaying the Cycle search until Unicore is out. Opening Nadir Servant alongside this is essentially Exodia.

With enough weed-smoking, you can make Geomathmech Final Sigma easily.