With the battles over we explored the cavern, discovering an inset with a gem atop it. The thing radiates magic and foreboding, I fear that it is the cause of the troubles. Touching it left me drained, and though I sensed only conjuration from it, its effects seem more necromantic in origin. Conjuration, of course, as I well know, has no shortage of utility, and could easily account for all manner of effects, but the use of it in this way is baffling. It could be summoning forth energy from a negative-aligned plane, or transporting life from its location to elsewhere, and then there are the creatures it brings forth. They do not respond to death as summoned creatures do, and yet they appear to dissolve with time, most unlike a calling effect. Could they be created? Such magics are well beyond even my own knowledge and yet, if it draws upon ambient life energy to call forth an unstable creature formed of extra-planar essences then perhaps... But the creatures are so mundane, could it be forged by wilderness cultists, but they seem to know no more of the device... And why was it left here, some sort of guardian? Were they servants? I will have to try to return with more analytical means.
As I feared, Finni did not recover, this has not been the first death and it will not be the last, I must resolve myself to that and continue my duties.
We have rested for some days now, our wounds were most persistent, but we have resolved to return and undo the curse before the mercenaries arrive. I have prepared many divinations and should be as prepared as I am able to explore the device, I shall have to rely upon the others to guard me.
The peril was far greater than I anticipated, there was an infestation of humanoid brutes, the first band were thugs, the others... Terrible beasts of madness and cunning, I read their minds and saw only battle lust, our injuries are laced with poisons and they did not hesitate to strike an exposed back or injured limb. They did, however, perish, and with fortune we will be able to retire to our vessel with a powerful trinket in our possession...