Reworking how Kalista works with the Oathsworm

I hate Kalista. Well, I only hate Kalista when I have to support her. And that is something I'd like to rework;

W; - Only Kalista can proc it on enemies the Oarthsworm has marked

R; The Oarthsworm becomes invulnerable for 0.75 sec (Think a mini-Kayle ult). After 0.5sec, Kalista will sends a shockwave that knocks >ups the first champion(s) it hits. The shockwave is fired from the oathsworm, and in the direction he or she is facing.

This way there is NO POSIBLE WAY of trolling your support.