When you see your team's Karthus about to get a penta ult

http://gelbooru.com//images/95/2e/952eb96233dd1f8e6e07842c5a329f49.gif?3076122

Then you remember that you're on the PBE and the whole enemy team bought Edge of Night.

http://gelbooru.com//images/31/4a/314a09c7ffb0934a348a8dc0be7a3520.gif?2282154

Gonna be so many sad Karthus mains.