Stevelin7, I'm not sure I understand what you mean by binding and how that relates to the tadpole. I think having it beyond the tadpole is a bit out of left field writing-wise, especially making it a new mechanic, as JandK says. My suggestion was just enhancing use of the Illithid abilities we've already got to allow for a sensible way of turning otherwise rabid evil characters to your side in the long run. Could you explain what you mean by binding?
I see.
but your suggestion the tadpole effects won't be permanent, your have to "concentrate" on the companions, or once the psionic abilities break, the companions will wake up, ...and then your will get hatred from them in return.
does this you want to see?
or a binding system, just extreme powerful as "true name" in the final stage of "neverwinter nights hordes of the underdark". but of course, the price will be much far higher then gold.
a binding will let you get a permanent spiritual connection that don't require your "concentration" in psionic abilities, but require a ritual with heavy price that you have to pay for equal price.
because "The country is easy to change, the nature is difficult to change", a villain can not really change his alignment to other alignment.
