Guess Riot succeeded on their quest for dank weed, thinking that a 2.5 sec aoe stun on a basic ability was a good idea. But no... 2.5 sec of snare or taunt on Amumu and Galio ULTIMATES was considered broken. 

Edited June 13, 201511 yr by Fortuna

Guess Riot succeeded on their quest for dank weed, thinking that a 2.5 sec aoe stun on a basic ability was a good idea. But no... 2.5 sec of snare or taunt on Amumu and Galio ULTIMATES was considered broken. 

Ekko's nerf on the upcoming patch is :

W - more mana cost / Granded 2 seconds after cast ( was : Granded on cast ) / Detonation zone is now more readable for opponents

R - Increased visibility of ekkos time-clone to the enemy team.