But to the back to my point from the main feature of the game I think leaving somekind of suspense on whenever its good or not to use the power to be left a mystery is a good thing. Like I have pointed out before you could never use the tadpole then it grows anywways if you decided to drink Omeluum's potion..drinking the potion is not exactly evil temptation nor is it good. You get the ring of psionic protection in exchange.. I am curious how important that ring might be later for either path.
I disagree that it's a mystery as our characters are kidnapped by monsters that eats brains in order to sustain themselves and they have infected you with a parasite that will eventually turn you into one of them. Most people who knows D&D lore will quite quickly and reasonably presume that the tadpole powers are bad. But to your next point, I think the ring simply prevents you from being controlled by true souls and stops you from using the tadpole.
