I may have misunderstood Conqueror
But from my understanding this keystone is basically:
After 4 seconds in combat, your next AA will increase your damage output by 20% and give you some AD
I keep seeing people saying "armor has no effect on Conqueror users" or "you can't counter Conqueror because it's true damage", but in reality Conqueror is merely an increase to the damage you deal, which is reduced by resistances. I have a feeling that because it's labeled as true damage, people automatically assume it can't be dealt with.
the attack would do 400 physical 100 true.
are good for this.