Casting ultimates on dead units.
Casting ultimates on untargettable units.
Ludens not dealing damage to the people it splashes to.
Champions that you're using that no one else is using but somehow aren't showing up in your pool like ever at all.
People having four or more **completed** items than someone else.
Chain Vest Party.
Getting an absolutely worthless item from dragon (like frozen mallet when no one on your comp is glacial).
The list goes on.