The month-long 10 year anniversary event is now underway in Rift and will last until April 22nd.
Players will be able to celebrate a decade of memories with the Tenth Anniversary Cape and the special Tenth Anniversary Cake that provides a sweet raid buff. For those with a mischievous side, the Fancy Celebration Cake can be placed for all to sample with a fancy twist for doing so: Everyone will turn into Carnival Unicorns and be able to unlock the Carnival Rush achievement for an exclusive vanity unlock.
A trio of new Artifact sets will also be available for participating players along with other rewards.
See the official Rift site for more info.