Invisible tower shots without damage indication.
In my last game as Zed, I was at mid lane inhitor turret with full health, 2 teammates, and 2 minion waves. Next thing you know I'm getting spam pinged and told you fall back... but I don't know why.
Then my screen goes gray... Turret 92% damage Minion 1% damage Leona 7% damage
But I never even attacked Leona to draw tower aggro.
To add insult to injury, everybody except me saw the tower shooting me.