League of Legends Rigs have been released for the recent AnimChallenge contest. All rigs available for Maya (Agora). Braum and Annie are also available for Blender (RiggingDojo)
League of Legends Rigs
Riot Creative Contest 2017
Riot Creative Contest 2017 is a competition by Riot Games and hosted by Polycount that artists, animators and other disciplines can enter. Expect killer prizes, amazing art, and stiff competition.
#Animbreak Challenge
#Animbreak Challenge is a competition created by Jason Shum where you can win cool prizes for animating things, what’s not to like! You can join on Facebook or Polycount
Animator's Resource Kit 