All of your Persona come from a different live and they all have received a different training.
Prerequisite: Greater Persona
Benefit: For Each of your Persona you gain 1 Level in a Class of your choice for that Persona. You gain a extra level in that class for each Changeling Paragon Level you take.
Essentia: You gain +1 Virtual Level in that Class / Essentia
Special: You cannot take the Multiclass feat for that class and your level in that Class can never exceed your total Hit Dice.