Riot has released several free skins for subscribing to their various feeds! Note that you do not require the champion before getting these free skins. In fact, you will find that the champion will be automatically unlocked when you receive the skins!
|Unlockable||How to unlock|
|Unchained Alistar||Subscribe to the riot games youtube channel click here. You must have a pre-existing youtube account.|
|Riot Girl Tristana||Follow the link from the main page on the league of legends website or click here and "like" the facebook page. You must have a facebook account to obtain this skin.|