I'm going to assume Harry's just going to do the same thing so we can move along...
Cultists: spread out across the corners of the earth... seek the items of interest...
Big Dog: speak further, seek new people who could possibly serve me in positions of power.
[6] The cultists scour the earth, finding everything from artifacts to different places they want to show their beloved flower god when he arrives. Unfortunately they lose track of how many things they catalog and end up with a huge compendium of seemingly random stuff which they must sift through to find what they need. And naturally they chose not to actually pick any of it up, because the orbs are actually twelve feet in diameter and made of solid quartz, you kinda want to bring the rest of the stuff to the orb not the other way around. Trust me, a bunch of cultists died trying to carry one of those things (-10 cultists). Also, dragon blood orchids are kinda poisonous, you don't wanna know how they found out (-40 cultists).
[3] You get new followers, but still not anyone important (+50 cultists).
turn 4 end. Turn 5 begin.
Score:
Big dog: 150 cultists
Keeper: 75 cultists, 35 Inquisitors
Brok: 20 Inquisitors
Find an army and order them to be my cult. Earthquake them if they refuse.
[6] You successfully convince some people to join you (+50 cultists). Unfortuantely they want to see a demonstration of your power and die in the explosion (-50 cultists).
attempt to gain more cultists.
Task current cultists to gather corpses/skeletons, don't have to be human.
[6] You whisper into the minds of mortals to gain more followers, alas you whisper too loudly and they all go mad and get dragged off to Ashvale Asylum (+75 insane cultists (jailed)).
[6] They gather the corpses and bones of many creatures and attempt to sort them out for you, unfortunately separating them from their useful connective bits. Resurrecting them now would just give you piles of living, nonmoving bones. Also a few cultists get sick and die after handling the corpses (-5 cultists).