Riot's balancing techniques
Add some stupid mechanic to a champion that was perfectly fine such as '50% Tumble refund during ultimate'.
Then nerf the stupid mechanic to 30/40/50% refund and then trick the playerbase that Vayne is nerfed because this balance team are full bias towards certain champions and don't wanna see them fail because they bring in the $$$$, meanwhile the low $$$$ champions can stay in the dump for seasons and seasons.
HOW ABOUT FUCKING REMOVE THE CD REFUND ALL TOGETHER, THEN NERF VAYNE'S W DAMAGE.
FOR FUCKING ONCE CAN WE SEE A PROPER NERF RATHER THAN TRICKING PEOPLE.
We are not stupid.