How to better balance conqueror

• True damage conversion down to 15% from 20%

• Scaling AD increased from 10~ 30 to 12~50.

This would reduce its power level against armor a bit and crit users (which is when its currently too strong), while helping champs that with the current conqueror isnt as good on them and a direct nerf to it would make no sense (riven, kled or renekton) for example.