Erollisi Day begins in early February. There are 2 Quests and 2 Collection Sets for Erollisi Day.
Things Are Best with Friends
The Perfect Companion


Along with these there are 2 sets of Collections, these are simply Ground Spawns found throughout Halas and Neriak A.

Completion of all tasks and collections rewards you with the following:
Broken Heart Nimbus
Crown of Roses Nimbus
Love's Expression
Packed Picnic Basket

The Hero's Forge Hats also make a return, being random drops off mobs.