So URF is gone tomorrow as of the day I write this, unless if Rito extends the time by a week again.
However, we learned quite a bit from all our URF experiences.
Here are just a few:
You can never win a snowball fight against This Little Kid.
Everyone can be Boxbox and Megazero with Riven.
Everyone dies every 40 seconds with Karthus.
The Thresh Prince has way too many hooks.
Got anymore? Put it in the comments section.