What is a one-off event? Limited skins available only at one-off events Stellar Skin Chest Event Patterns New Hero Implementation Events New pet implementation event New Titan Implementation Event Hero Rework Event Test Event One-off Events in 2021 Fri, April 16 (7 days) : Alvanor’s Awakening Hero, Albanor Implementation Event. Mon, July 19 (1 day) : Night Fight Skin Stone Event. Mon, July 26 (3 days) : Otherworldly Call A 1-day version was later held throughout the year. Fri, July 30 (3 days) : The Fellowship of Guardians Skin Stone Event. Fri, August 6 (7 days) : KING OF ETERNAL SNOW Pet, Biscuit implementation event. Fri, September 10 (7 days):