WoW XIX: This is my Artifact. There are many like it, but this one is mine.

[The Glyphstone]

If you have friends/guild to Mythic with, focus adds and don't stand in fire, having one or two people <810 is still doable.

If you're using group finder, then yeah expect to get kicked unless you're ilvl 9001.

Just stay out of Violet Hold, though, below 830+ or so. At least one of the random bosses (Blood Princess) there can't be overcome with skill, it's simply a brutal DPS check with very tight tuning. Getting her as Boss #1 will basically kill your run; getting her as Boss #2 is even worse because it ruins your lockout for the week.