Contamination which does poison damage and affects all susceptible surfaces
Global cooling which does water damage and affects all susceptible surfaces
Ignition which does fire damage and affects all susceptible surfaces
I personally feel that these 3 spells are part of the problem with magical AOEs since they can be rather uncontrollable. The fact they affect all susceptible surfaces is more of a downside to the 3 spells moreso than anything.
I rate them all crap (0/5) because given the disparity between enemy armor and player character armor, all of those are much more likely to be more damaging or inconvenient for the player characters than they will be for the enemy. I completely agree with you that the uncontrollable nature of them makes them bad.
The same goes for Fireblood, which has a similar problem. It makes an enemy which I can't hit with melee weapons because I'll hurt myself as badly or worse..
