[@GarlandDaHero]
Okay I think I've come up with a Guardian monster that would fit the Nekroz archetype that has summoning conditions that Warrant it's abilities. 
It's needs you to banish 3 Nekroz ritual spells from play and tribute Nekroz ritual monsters who's level add to 12 by removing them from play to be summoned.
No attack but 3500 defense.
It's protects all Nekroz from card effects and can mimic the effect of any Nekroz ritual spell once per turn.

Also your LP must be less than 1500 to summon it.