Legion Mythic+ Dungeons Available This Week Only - Offers New BiS Unique Items

wowhead.com:

Legion Timewalking is available for this week only, with the return of Legion Mythic+ dungeons. These dungeons will drop unique loot that can be upgraded with Valor, making them very good, if not Best-in-Slot! Legion Timewalking

Completing 5 Timewalking dungeons for the A Fel Path Through Time quest will reward you with a Cache of Sepulcher Treasures. However, this Cache of Sepulcher Treasures cannot contain Tier Pieces.

Legion Mythic+ is the highlight of Legion Timewalking as players are able to run old dungeons on a scaling Mythic+ difficulty! Unlike other Timewalking dungeons, these dungeons instead scale up to the correspondent Shadowlands Mythic+ level and has a separate Timeworn Keystone. All dungeons available during Legion Timewalking are also available in the Mythic+ difficulty.

The dungeons for Legion Timewalking are:

The affixes for this week are Tyrannical, Bursting, Volcanic, Infernal. For more information on the special Infernal, check out our guide! Infernal Affix

Legion Timewalking Mythic+ loot will follow the same rules as the Shadowlands Mythic+, dropping at a maximum ilvl of 262 from +15 dungeons, and upgradable to ilvl 272 with Valor. Completing Legion Timewalking Mythic+ dungeons will count towards the Great Vault requirements, but Legion loot cannot show up as a possible option on the Great Vault itself.

Legion Mythic+ dungeons offers loot that can be upgraded with Valor making some of these unique trinkets and items very very good, if not best in slot. Some of the items