Lissandra vs Ashe
I only recently discovered that when on opposing teams, these two have a sub quest like 
and 
do. When I found it I won as Lissandra, but all it did was give me a crown...is it supposed to do more and I just missed it?
2 Comments
Nope. All it does is give you a crown. But when you kill the opposing enemy, you say a really badass quote. If you want me to tell you those, just reply. Plus, it's tons of fun!
Ashe, Sejuani, and Lissandra get this subquest if they are on opposing teams. They are all fighting each other for control of Freljord.