Destiny’s House of Wolves expansion will soon be upon us, and Bungie has been revealing information surrounding what it’ll include over the past few weeks. Just last week, the developer highlighted all of the PvP options players will have in House of Wolves, and this week they focus on PvE.

Destiny’s House of Wolves will feature an endgame “horde”-style experience called the Prison of Elders. The Prison of Elders will support matchmaking and will throw enemies at Guardians within increasingly difficult waves. A total of four different setups will be available to take on. The first is the standard Prison of Elders arena that’s meant for level 28 Guardians to tackle and will have randomized elements and is completely combat-focused.

Three additional challenges will also be available with an increase in difficulty: one for level 32 Guardians, another for level 34, and the last at 35. The first two arenas will rotate through a group of five on a weekly basis, while the last that requires level 35 Guardians will always be a Skola’s Revenge. Guardians can complete Prison of Elders challenges as often as they like, but will only be able to receive rewards from each of them once per week.

The Prison of Elders will offer exotic and legendary gear, some of which will only be available exclusively by taking on its challenge. Bungie also previously shared Prison of Elders will reward Guardians with the Etheric Light, which is a new material needed in order to upgrade existing legendary equipment.

Destiny: House of Wolves will be available on May 19.