League of Legends emblem and ranks keychains:
League system is a ranking system that matches players of a similar skill level to play with and against each other. It uses seven tiers which indicate the skill level of players. The five lower tiers are further divided into five divisions each. Players within each division are ranked using a system of points called League Points (LP).
This is a list of the tiers from lowest to highest skill level. Each rank is represented by an icon: