Looking at the rosters of guilds that have downed Mythic Xavius...

[Daedius]

Most of the guilds have everyone with literally all of them equipped with legendaries.

What's their secret? I've been doing an absolute ton of Heroic/mythic/+ dungeons, doing the Emissary WQs, etc. and I have yet to get a Legendary.

[Shelly]

Most of the guilds have everyone with literally all of them equipped with legendaries.

What's their secret? I've been doing an absolute ton of Heroic/mythic/+ dungeons, doing the Emissary WQs, etc. and I have yet to get a Legendary.

Multi-boxing of same character classes. Whichever one gets a legendary first is now your main.

Also given the bug once you had that first one you had a better chance at getting that 2nd or 3rd.

[Deleted]

Endless grind of all content, but mostly mythic+

[Amat]

Anyone raiding at that level has been doing literally non-stop mythic+ runs "boosting" randos' keystones all day every day and getting three chests per run generally.

[apelsinjuice]

mythic+ farm for 15/hours a day

[erufufu]

Put in the work get rewards. These guys are pretty much required to have 5 charcters equally geared so they can funnel gear into mains non stop.

[VikingMana]

Most of the guilds have everyone with literally all of them equipped with legendaries.

What's their secret? I've been doing an absolute ton of Heroic/mythic/+ dungeons, doing the Emissary WQs, etc. and I have yet to get a Legendary.

Extremely dedicated grinding - 16 hours a day exclusively doing content that can reward you with a legendary. That, and a nice big bucket of luck. In many of these extremely high-end guilds, you'll find there are probably another 20 people who didn't get to join for Mythic progression because of their gear or lack of a BiS legendary. Secondary teams and so on.

You don't see all the less lucky people though.