its self boosting ability lasts only as long the advents supply of new fodder lasts, the antimatter based nuke will be gone once the am is gone.... dunno about most powerful, but it certainly did not impress me so far.
perhaps you can enlighten me on this one?
Self Boosting - Just spam corvettes as your fodder who cares about them really.
Chastic Burst is probably one of the most OP abilites in the game atm since it's a really spammable AOE that isn't very constrained by AM cost. Plus the fact that you can hide behind a couple of guardians with replusion and still use it on the fleet in front of yah.
1. Guardians with repulse.
3. Chastic Burst
4. Laugh as their fleet is being instagibbed.
Also who would buy more Radiances there are a lot better choices for a capital rather than the radiance. Heck I don't think I see them built ever these days except for detonate AM.