Rengar vs. Kha Zix "One of League's Oldest Rivalries"

The Rengar and Kha'Zix rivalry are the most noticeable ones and the biggest ones because a special event will appear in game for it.

make these a thing

Already has a rivalry with

and we forgot v

The 2 are from season 2,so yeah their rivalry is rather old. It isn't the oldest,but it is far from new.

Also Garen has no business with Cassiopeia...