look in the blaster and defender guides for energy blast.
For pain you can supplement empathy guides for the most part and wing the rest of it.
It seems as if few newer guides get written these days. I'm not sure why that is - perhaps because IO sets allow people more freedom to put together really funky builds that will never the less work and work well due to slotting up some otherwise dud power for an IO set mule, perhaps because some power sets get nerfed/changed etc. Who can say?
When I have a question about such things I find that posting in the forums about the single power (say "Acid Mortar") rather than ask for a whole guide works pretty well. Plus whenever people posts builds I glance over them to see what they're up to.
I'm working my way up on an Energy/Pain Corruptor, and came looking for a little advice, but I found only one guide for Energy, and apparently none at all for Pain. If I missed something somewhere, then by all means point me in the right direction.
If there really are no guides for either of these, though, has anybody played either Energy/ or /Pain, or the combination, and have any advice to offer?
@Trystan Laryssa