I was just playing Xin Zhao and I noticed that Eve and his ults are kinda similar (Initiate, % HP damage, and defenses based on enemies hit) so maybe they should make Eve's ult even more similar considering IMO they overnerfed it, so like:
ACTIVE: Evelynn impales all enemy units in the targeted area, dealing base magic damage plus 15% of their current health and slowing their movement speed for 2 seconds.
Evelynn siphons their pain, gaining a shield that grows in strength for each enemy champion hit and lasts up to 6 seconds.
Base Damage: 150/250/350 (+70% AP)
Shield: 150/250/350 per enemy hit
In addition, maybe a slight (like 50 units) buff to the range, and lower cooldown I think this would make it a lot better than it is currently without making her OP as it was before (I seem to be one of the few Eve players that actually thinks she was OP before the nerfs last patch)
EDIT: just noticed my fail type-o in the title :P