Check out this excellent guide A Guide to Legion Legendaries on Wowhead
Check out this excellent guide High Level Mythic Keystone Dungeon Guides on Wowhead
Check out this excellent guide Everything About Mythic+ Keystones and Dungeons on Wowhead
Please take a look at this excellent guide on Wowhead by FatbossTV in preperation for tomorrow.
Thanks in advance,
It took me 3-4 hours to get Lucid Nightmare but it was worth it!