descriptions are added for everyone unfamiliar with league terms ~
In League, two teams of five players battle in player-versus-player combat, each team occupying and defending their half of the map. (source: Wiki)
There are three different lanes the players can advance to: top lane, middle lane, and bottom lane. There is also the role of jungle to fight monsters for buff, coins, and exp.
Mages are champions who typically possess great reach, ability-based area of effect damage and crowd control, and who use all of these strengths in tandem with each other to trap and destroy enemies from a distance. (source: Wiki)