Today when i was out doing my daily Ixali quests i happened to see a couple of low level mobs walk off to a wall and just keep running into it. Upon further inspection i saw that they were being attacked by a player who was in a wall spamming Ruin on the mobs at a incredible rate with no cast time. In the photo's below are the players that i caught in the act of this.
http://imgur.com/a/tbJb0