Watching some videos of RKS:F (brownie points if you know what that is), I got an idea on how Riot could make some lore if they come out with a pair of Yordle twins. (They were working on such a Champion for a while, but allegedly it got canceled.)
Note that these are just jot notes.
- These twins were part of a performing Yordle circus, using their perfect tandem talents in magic to earn great fame.
- At one point, Veigar ended up attacking Bandle City and the twins intervened. Though they turned back Veigar, one of the twins was mortally wounded.
- In a desperate attempt to save the wounded twin, the other twin used a spell to bind the wounded twin's soul to a gem (or something). The wounded twin's body is now kept in a form of magical stasis, but his/her spirit floats around the other twin as a kind of "ghost".
- The still-living twin joined the League of Legends to try and find a way to bring his/her twin back to life.
Sounds neat? Kind of a sad story, but it'd fit.