Why I Hate Kalista
Kalista as an AD carry most likely has a ton of fans. Hell I've watched players take her and just...wow. Just WOW. Please do not ever play against me.
However if I'm in the botlane and either I am Kalista or I'm supporting a Kalista I loathe it. Even with a good one. Even if I was with the best one..I loathe it. I hate it. I despise it.
Why?
Because I feel "Leashed" via the Oathsworn mechanic. Kalista's ultimate is all about it, her attack speed boost she gets(Which can be pretty huge) is all about it, her %HP damage that is super useful(5% max HP damage? Hell yes) is all about it.
So if I'm not permanently attached to Kalista's ass I am crippling her, and if my support(When I'm playing her) isn't attached to me I'm crippled.