Board Thread:Warhammer 40k General Discussion/@comment-7186329-20130329164207/@comment-99.243.30.67-20140718202418

Based on the Tyranids ability to isolate a planets inhabitants by severing their ties with the warp. A system of orks would then become divided into their individual worlds as the isolation effevtively divides a potential WAAAGH!!! Into many pieces, thus making it hard for the orks to unify, and unification is required for some WAAAGH!!! To reach the tech level to produce Gargants, although the if the orks on the planet already have Gargabts that is a different story.

The orks believing-psykik ability is drawn from the warp as usual or from the large congregation of orks, but due to the massive warp shadow produced by the tyranids this effect may become lessened.

Orks may win via biospores was said by a person earlier but due to the tyranids nature to to drop their ships into orbit to collect biomass which causes this "Day 80: Ripper swarms board the Brood ships and return to the Hive Fleet. The hive ships descend into the upper atmosphere and begin collecting it. Reduction in atmospheric pressure causes oceans to boil away, which are also collected so that their free water can be used by the fleet. The loss of ocean mass causes plate tectonic shifts, dramatically increasing volcanic activity across the victimized world." it essentially fries all ork spores left on the planet or the biospores are brought to incubate on the carrapace of the tyranid Narvhal ships.

It is also stated that orks are succeptible to genestealer impregnation (weird right? All male impregnation)

All in all for short. Tyranid warp shadow isolates ork warbands from forming WAAAGH!!!s and lessens the effects of ork Psykik powers, as well as the tyranids way of consuming a planet kills most ork spores.

Thus the situation seems very grim for the orks.

Thats just imo, I see Tyranids and Necrons a viable match.