demiurge1138
Inventor of Super-Toast
I think we should give them regen overcome by both fire and cold.
I think something like the aballin would work, without the acid part.
Drown (Su): With a successful grapple check, a well spirit draws the victim into its fluid body. The victim is at risk of drowning (see Water Dangers in the DMG for the risks and effects of drowning). A well spirit is not considered grappled while drowning a victim.
A trapped victim can attack the well spirit or make additional grapple checks to escape its grasp. The character cannot cast spells with a verbal component or use any other item or ability that requires speech. A trapped victim may hold its breath, but must succeed on a DC X Fortitude save each round to continue holding its breath. The save DC is Constitution-based.