Sometimes you have this moment that you forgot to select the right masteries for your champion but because you have forgotten it you now have to play with a mastery that sucks.
Sometimes you are a jungler but went to the restroom or just something you had to do and you have forgotten to select smite. Jungler This really sucks.
To prevent these things from happening I suggest that you can change your summoner, mastery or rune page during the first 30 seconds in game.
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