The Transformation of the Labyrinth:
To reset the Labyrinth during the event you can use your normal Scroll: The Transformation of the Labyrinth. It can still only be used once a month but it can have it's cooldown reset by the use of a Sands of Renewal (or it's upgraded versions).
Additionally you can purchase Ephemeral Scrolls that will reset your current instance of the Labyrinth in the Premium shop in the "Labyrinth" tab.
Bosses:
Different than in normal Labyrinth, the bosses show up in a predefined order.
Underground Scorpion
Chaos Mage
Ghostly Commander Ulf
Forsaken
Resurrected Shaissar
Custodian of Life
Black Dragon Oruzd
Twin Dragons
Guardian of the Labyrinth
Heart of Nightmare
Labyrinth Golem
Animated Armor
Vision of Poseidopus
Tskar, Lord of Elements
Spirit of the Kratkh
Three Sisters
Monster of the Cathedral
Royal Hunsman Elgar
The Maw
Celeste
After the conclusion of the event the participants will receive a letter with some Inspiration of Datkhar. The amount received depends on the number of bosses you killed in comparison to other players on the server:
The 10 players with most bosses defeated during the event will receive 200 pcs.
Players ranked 11-50 will be sent 100 pcs.
Ranks 51-200 earn 50 pcs.
Any other participant that has killed at least 20 bosses will be given 25 pcs.