Several balance issues:

The acid trap that blinds can deal no damage due to oozeshield, but still blind you despite the oozeshield. That seems like a bug.

Hero warriors boneshatter for -7/-7 on an invoker with Demi-Elemental Transcendence. Traps boneshatter for -11/-11. The impales of traps also seem to ignore mitigating effects such as Demi-Ele Transcendence, or Calcify, whereas warrior impales work fine. This also seems like a bug.

Neurological poison can last 50 hours. During those 50 hours, you occasionally get blinded for short durations, you move in random directions half the time you try to walk (thus forcing you to stay at the same spot for 50 hours) and you fail spellcasting about 40% of the time.

Mind control poison lasts 20 hours or so. During those 20 hours, you get 'forget' effect frequently for short durations, and fail spellcasting often. The spellcasting failure chance of neuro and MC poison stack, thus making it nearly futile to cast spells under the effects of both poisons.

Those effects are incredibly powerful - overpowered in the nuisance they cause to players (no-one likes wasting 30 minutes in real life because they got hit by neurological poison). But, they are completely nullified by a certain creature's blood.

This doesn't seem balanced either - to have an entire skill-set completely made useless by one effect. (On that note, the jade brooch of abjuration has a similar effect of rendering specific classes useless. Also Grinning Devil Shield for APs.)

Is it possible to reach a middle ground? We could have the blood not grant full immunity to poisoner poisons, just regular poisonous bite attacks and regular poisons. Perhaps it can reduce the chance/effect of the poisons.

At the same time, something needs to be done about the ridiculously long poisons, and how debilitating they are. They're not very fun to play against.

Other players who agree on this, please post replies stating so. Thanks!