one of the biggest biological boons from the orkz is gonna be spores that can coalescence into colonies of mold wich then can spawn new biological forms while sucking up nutrients of the ground
the flood able to form colonies that spawn even more flood even without the mass and guidance of a proto-gravemind is a game changer it allows to deploy spores and then simply wait and let it create pure flood forms for him no matter how primitive
all those spores spread by the cultists now will become esentially FOB's (forward operating bases/outposts) from wich the vanguard of the flood can and will attack
and this ensures that no matter what the flood will win and succed,if the genestealers break the hive they will just release a barely contained terraforming charge into the atmosphere,fasto forward a decade and the planet will be covered by flood/ork colonial growths
meanwhile inside the ork gestalt as tide begins to infect orkz:
im tide,harbringer of your doom!
IM GORK!
IM MORK!
WANNA FOIGHT!
what..,hear me out!
FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!
FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!
FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!
FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!,FOIGHT!
jesus christ