You want to have both floodgates on the field, Unicore (Extra Deck negate) and Necrovalley (Graveyard lock). Use Diviner to pitch Arc Light, Arc Light then will add the Ritual Spell or Ritual Monster, depending on the situation. Then, use Gravekeeper's Commandant to search Necrovalley, or Necrovalley Throne to search Gravekeeper's Commandant which in turn searches Necrovalley.
I honestly don't know how well the deck will work, but it's a funny Idea, really.
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