Metapsi and Dominant Ideal

[Elkad]

I realize now that the general rule that you can't benefit from the bonuses from the same source should apply here. Like how you can't use Power Attack 3 times on one attack and just stacking your to-hit penalties.

That's a pretty solid argument.
"I Shock Trooper PA ∞ times, for ∞*2 Bonus Damage. (also reducing my AC to -∞)"