Bandle City is supposedly "ruled" by a self-appointed _____.

Who is the current holder of the "Book of Thresholds"?

According to Vex's lore, yordles are immortal. 

In the lore, he can use his electricity magic to fly at great speeds and is able to cross Ionia in only a few hours.

How much do you know about League's beloved (and sometimes absolutely despised) furry friends?