Kalista needs a new passive.
Lets be honest, every problem that has EVER plagued Kalista since her release has stemmed from her passive. Riot has needed to nerf her so far into the ground, that her passive now makes her autos deal only 90% of her attack damage. She is the only champion in the game that has a mechanic like this that actively keeps her from reaching her full potential, and for good reason. We've seen how scary her full potential, and never want to see it again.
So, why not completely rework her passive? Maybe instead of giving her awesome mobility, reward her for focusing a single target. Rend's passive of impaling her targets becomes her normal passive. When autoing a single target, the more spears are in that target, the more attack damage and attack speed she gets towards that target. If she switches targets, she loses these bonuses until she goes back to her original target, or until she pumps in the spears into her new target.
Just an idea I had that should make her far easier to balance, without the risk of her becoming an unstoppable monster in the right hands. I feel that it also fits her overall theme better than her current passive.
then