Exhaust needs some nerfs

To the damage reduction part of it... Who thought putting 40% damage reduction was a good thing? That literally fks over someone damage output to the max. A champion shouldn't be countered every single teamfight by a point and click summoner like that. Ignite doesn't deal 40% of a targets health in true damage, Barrier doesn't give you a shield equal to 40% of your health, Heal doesn't give you 40% of your health back, so why does Exhaust remove 40% of someones damage on top of slowing them down and slowing their attack speed. Why 40% damage reduction on top of an attack speed reduction... This summoner is imbalanced to the max. And yes I am salty that every single time I play Akali I get countered by that stupid summoner. Better hope they don't have a Shaco or some shit with a second Exhaust.