Not just all, lighting charges on them and they heal off it making the scaling quite reliable.
Best case happens when I fill the map up and permanently stun the map.
Most of the stacks comes from dream minions applying lighting through psycho and lighting main hand.
And or
Dream applying race bonus as astral damage with 50% lightning when mobs spawn in range early.
Quite fascinating to watch the playthrough. you play as teleporting dungeon bringing the bullet hell and mobbing the entire map, while channeling infinitely scaling astral damage.
I have tried with icon of the North main hand and mass summon ice discs but they are actually less effective as they are melee. Not bad early but fall off due to no infinite scaling against king of many colours.