The 2013 Snowdown Showdown event features matchmaking queues for 1v1 and 2v2 duels on the Howling Abyss map.
League of Legends is known for its focus on exceptional teamwork to win games, but what if you're more of a lone wolf? Well, the Snowdown Showdown 2013 update gives you the chance to prove you have the best dueling reflexes, by allowing players to enter a matchmaking queue for 1v1 or 2v2 duels. The update also adds new skins for Lulu, Sivr, and Singed, Christmas-themed ward skins, Mystery Gifts and more!
In the 1v1 and 2v2 gamemodes, games will be blind draft. Each team has the opportunity to ban out three champions, after which the game proceeds to a blind pick phase. After both teams have locked in their picks, there will be an additional period of time in which the enemy picks are revealed to each team - this gives players a chance to adjust runes, masteries and summoner spells accordingly before the match starts. Victory can be assured by one of three ways: you can score first blood (or two kills in 2v2 mode), waveclear your way to 100 CS, or demolish the enemy turret before they take down yours.
The three new skins, Snow Day Singed, Winter Wonder Lulu and Snowstorm Sivr can be purchased for 975 RP. The new ward skins, a snowman, a candy cane, and a gingerbread man, will be free to use during the event, and can be permanently unlocked for 640 RP. Check them out below:
You'll also be able to give "mystery gifts" to your friends - which unlocks a random skin or champion that they don't own - and unlock summoner icons by performing various achviements (such as winning a matchmade game as a premade team).
Check out the official F.A.Q if you have any more questions.
Source: Riot Games