Spiking the Mix
I've a feeling the long trip across the sea is affecting the effectiveness of our plague. What is needed is a potent toxin to boost the potency of the strain.
The crabs near this beach are a distant relative of the much smaller brown-shelled tidecrawler. The smaller tropical variety produces a paralytic toxin strong enough to knock out an ogre.
As we all know bigger is better! The much larger glands on the local variety should prove more potent. Bring me a few!