Prepare for some random demon encounters as you travel: you’ll get NPC assistance in the skirmishes. Depending on your abilities, you can fly there, or take a flight path. You will find the tomb in the northern region of the Broken Shore. As you progress, you can also unlock four new achievements: Abyss Worm, Micronax controller, Fighting with Style, The Darkener, and the Glory of the Tomb Raider. Especially demons, so you can guess what to expect – aside from the demons, you will face leviathans, night elves, and tormented souls, and other monsters. The temple is full of night flowers, and demons. It’s the very same temple where Aegwynn locked up the Avatar of Argeras, which is about ot wake up. The bosses all come from the ancient Temple of the Moon/Temple of Elune in Val’Sharah. It’s good to decide in advance, as you will need to adjust strategy and loot/reward expectation accordingly.
You can raid on three different difficulty settings (Normal Mode, Heroic Mode and Mythic Mode), with Mythic Mode being the most brutal of the three. In the PvE progression, this is a 20th tier raid. There are nine bosses which must be cleared in each of the four dungeon wings. The Tomb of Sargeras is a (partially) non-linear raid, and the fourth raid in the Legion expansion pack.