Do you mean your keystone mastery? You can get this by selecting one of the bottom masteries.
Other than that there are no existent third summoner spells
Other than that there are no existent third summoner spells



Picture by: Thalia Kael
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I am quite new to this game. I finally became LV 30 recently.
When a game starts, it shows everyone's selected summoner spells. Everyone has three spells but I only have two. How do I select the third spell?
I have purchased three runes and saved it. I also have chosen masteries and saved. But I don't think it's now assigned to my champion even though I select them before the game starts. How can I apply runes and masteries?
Thanks in advance