So, can we make a permanent change balanced and if not, how long should the effect last?
So, can we make a permanent change balanced and if not, how long should the effect last?
So, can we make a permanent change balanced?
If you wanted to make it permanent, consider having the PC "bind" the soul into a piece of the dead creature's remains. Then, as long as the remains are worn (or something) as a magic item, the character with the PrC gains some power (+2 to Int or Wis + effective ranks in 1 skill). The benefit then becomes subject to theft, sunder, (temporary) dispel, or (permanent) disjunction.
Is the secondary name for this ability called "The Sylar Effect"?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.