The offlane is the position and role that has developed the most over the last decade. It widened significantly with patches where position three was just another carry for the team and patches where they were a glorified support, who would eventually give up farm to their position four. The role has also gotten a lot deeper: with the farm distribution becoming more and more equal, the amount of impact you can have as an offlaner is much higher in the later portions of the game.
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