Give Conqueror the Dark Harvest Treatment...
Incoming downvotes aside.
Let ap casters apply it on spell cast, give adaptive ap.
The only reason why dark harvest was so good for so long was because it could only be proced on auto attacks. It kept it too strong on the few users that could really abuse it. Once we opened it up to everyone it got balanced relatively quickly.
The same thing happened to banner of the command. When it got opened up so that ad champions couldn't clear it instantly it got nerfed and then removed.
So just open up conqueror like you did for dark harvest so we can finally balance it.
That isnt even counting that adcs have the strongest slows in the game mages have the strongest other cc with no delays and wind ups and when they do have wind ups they do massive damage unlike tanks. Adcs have usually have a dash or speed up to use to run. and mages have hp comparaable to better than tank items on top damage items giving them extra surviability to get their second wave of cc/ mobility to run/ damage to out right kill you. adcs kill you too fast too and assassins kill you too fast do damage in an aoe so they dont have to be accurate get free excape abilites and their spells come back up way too fast after using them.
back into regular gameplay.
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Riot needs to balance with smaller % numbers and Base damage numbers that arent always a multiple of 5 where are the 68's when 60 is too weak but 70 is too strong the 127's 303's