As a part of Destiny's one-year anniversary celebration, players in the game will be able to earn a limited Laurea Prima emblem for use in their character profiles, provided they complete a number of tasks.
If you can achieve these "Moments of Triumph", which is what Bungie is calling these activities, you'll get the emblem. You have until September 9th to earn it, after that the emblem will be unavailable and the ability to get it will be lost forever in time like tears in rain.
You have until the date to perform the following feats:
Bane of Atheon: Defeated Atheon on Hard
Bane of Crota: Defeated Crota on Hard
Bane of Skolas: Defeated Prison of Elders on Hard
Chest Hunter: Find All Golden Chests
Crucible Gladiator: Won 100 Crucible matches
Defeated the Dark Heart of the Black Garden
Light in the Dark: Prevented the summoning of Crota’s Soul
Light of the Reef: Captured Skolas in the Citadel
Public Servant: Completed 50 Public Events
You'll be able to track your progress on the Bungie.net profile page. When The Taken King comes out, you'll get the emblem on your character.