Description:
Apply 4 Curse stacks every second to enemy champions within 500 units for 5 seconds, stacking infinitely and refreshing with each application.

CURSE: For each stack inflicted on targets, you gain a permanent 1 bonus health and affected enemies are dealt 1 true damage every second.

Issue: The stacking of health is Exponential, meaning if you manage to stay near enemies it will ramp up and scale more and more. This stacking is non-capped and HP values of 20-30k are possible.
This level of exponential ramping is beyond broken.