Thunderlord's decree is what is causing all the issues in the game.

This keystone should honestly be removed and replaced with something more interesting, the current one is way too unhealthy for the game. It is the reason why lane bullies became intolerable. It is the reason why lee sin takes 60% of your hp with a a level 3 combo. It is the reason why mages and assassins can 100-0 the enemy mid at level 6. I remember back in season 5 and before when this stuff didn't happen. I remember when mid lane isn't about who can use their abilities first.