League of Legends season 6 team ward skin reward explained,
There has been some confusion in regards to the “Team ward skin”. Just to clarify, this is not the same ward skin as the one given out to everyone who is gold or higher in any queue along with the yearly skin, this is a different and potentially additional reward should you achieve it.
To earn the Team ward skin you will need to earn points by playing games on any ranked team, 3v3 and or 5v5 premade.
You gather these points from winning games, you can see how many points you have by viewing your profile, even if you earn a few points on many different teams playing occasionally they all will be saved up helping you reach your goal.