im planing for a new hero equip set.

im using almost no energy packages ony the drops i get.

so im looking for a nice set to do a lot of damage against invaders so i can get the most out of it.

the lvl1 invaders i can kill in one row.

now im thinking of the heroes sets.

set 1: a set with full power, so royal guardsmen set that maby i can kill lvl 2 invaders in one go or maby lvl 3?

set2: energy regen set. so i could go to full energy regen set, around 110% energy regen. how fast will be the energy regen in endgame? could i regen my health so fast, tat i could attack an t6 or uber 2 times an hour so i could kill one t6 per day on my own? right now i need to wait around 8 hours for my full energy regen. so if it regen double fast, i need to wait 4 hours for full regen which is far too slow to sustain attacks (eg 1 attack every 2 hours).

what are your experience with it or how you get your energy pots without rl shop fo all those invaderkills and how you get your perfect heroic sets?