In the description of this power (Eaters of the Lotus, p104), it states:
I'm not sure whether this has been covered in extant errata, but surely it's pretty likely for Wound Points to exceed Constitution within the first sequence of combat - which would then make the creature pretty likely to flake out fast, rather than offering a decent challenge.
Should this instead read:
After all, with this power, Impairment points tend to amass fairly swiftly anyway (1 at 10 Wounds, and +1 for every five thereafter), and there's no upper cap to them, either. (And creatures with this heal really slowly, too, unless they have other schticks to cover this.)