Looking for inspiration from the Coalition Wars 4, the master psionic's psi-sword only did a one time additional 1D6 MD.
In RUE which is what we're using the psi-sword for a mater psionic does
RUE pg. 64 wrote:and does an additional +1aD6 M.D. with his Psi-Sword at levels 2, 5, 9 and 13
My question, is does this damage scale add to the regular cyber-knight's psi-sword damage scale or does it replace it?
If it is in addition to a regular cyber knights psi-sword then the damage scale is as follows.
Lvl 1: 1d6, Lvl 2: 2d6, Lvl 3: 3D6, Lvl 5: 4d6, Lvl 6: 6D6, Lvl 9: 8D6, Lvl 12: 9D6, Lvl 13: 10D6 or 1d6x10, [b]Lvl 15:[/b] 11D6
multiply all of these numbers by 2 if the cyber knight is using paired psi-swords so upwards or 22D6 or 2D6x10+2D6 = > 2/3rds the damage of a boom-gun, but at no cost in ISP, unlimited duration, and can never be separated from their weapon.
I'm inclined to believe it supplants it especially when you start to consider that they get paired psi-swords later on. If they stack and it applies to both psi-sword the master psionic cyber-knight can do ridiculous amounts of damage with two uber psi-swords.