Uhhh riot Kayn Yummi is literally unkillable

Sadly I'm not able to get any good video, so my post won't be very convincing or credible and will seem like me ranting; However I'm simply alerting anyone who sees kayne yummi botlane should dodge they spent 90% of their game diving under our towers killing all of us while remaining at full health. I don't believe it is a bug just a crazy good synergy between kayn ult/wall movement and yummi heals. Rito pls nerf