You'll still need to buy the champion if you want to buy skins (using paid Riot Points or free Blue Essence). It unlocks them for play, but the game doesn't consider you an owner, which means you won't be able to buy skins for the champions you've only unlocked with Xbox Game Pass. Second, Game Pass technically doesn't grant you ownership of all 162 champions, according to Riot's FAQ. So you can unlock the whole roster without paying for champions - just very slowly over time. Players can also use Blue Essence, which you acquire just by leveling up and earning the first win of the day, and they can earn Champion Shards to reduce the amount of Blue Essence needed. After that, you can complete daily missions to acquire five additional champs, picking one character per day from a selection of three. You can pick one of five champions immediately after completing the tutorial.

A few caveats worth mentioning: First, paying for champions isn't the only way to unlock them - the game lets you unlock champions for free over time.

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