League Of Legends 10€
1. Click on the Store button in the client.
2. Click on the Account button (the profile with a gear behind it) in the top right of the store.
3. Select the "Redeem Codes" category.
4. Enter the code in the window exactly as it appears on the card, then click Submit.
EU WEST & EU NORDIC/EAST account is needed to be able use this code.