Forced Symmetry (Psionic)

With this power the psionicist can force a creature into perfect symmetry in order to temporarily cause or heal damage. Most creatures, including all the player character races, are laterally symmetrical in arrangement; that is, they have two halves that are roughly identical. This power lets the psionicist choose one of the halves and make it identical to a mirror image of the other. For instance, a psionicist can choose to make a one-eyed man completely blind or sighted in both eyes with this power.
In terms of existing combat damage, a creature probably has more damage to one half than the other; the psionicist can take advantage of this and increase the overall damage to the victim, but can no more than double the original damage. In reverse, the psionicist can duplicate the less damaged half, reducing damage possibly to zero. The DM decides how much damage is inflicted or healed. Once employed, the power affects the creature's entire body selected portions cannot be exempted. After rounds equal to the psionicist's level, the creature resumes its normal form, though all damage inflicted in the meantime remains. Items carried by the creature are unaffected.
This power can have greater effect on creatures that are radially symmetrical (a starfish, for example). The psionicist can pick one portion and make all the others duplicate it, temporarily.
Power Score— The change becomes permanent.
20 — The psionicist duplicates the wrong half.