The Entombed Sentinels are the second or fourth boss of The Venomous Abyss raid, depending on your route. 

This is a two-target fight with a special intermission when the bosses reach 100 energy. In this fight, the raid is split into two groups, with players interacting with different mechanics depending on the sentinel they're currently fighting. Tanks will want to tank the bosses at least 40 yards apart to prevent Ula'tek's Dominance from reducing their damage taken by 99%. 

• Split the raid in half and keep the bosses 40+ yds apart.

• Green Sentinel:

  • Spawns an add that pulses raid-wide damage and, if you don't kill it quickly enough, will spawn another add.

  • Orb droplets (small green circles) that need to be soaked.

• Red Sentinel:

  • Will put dots on random raid members - dispel.

  • Group soak near the edge of the platform (on Heroic this leaves a puddle)

• At 100 energy the bosses smash into each other and do a bit of a love in - immune.

  • Everyone gets four orbs over their heads split between red and green.  You need to run into someone else so that the number of combined orbs makes four.  So if you have one green orb, you need to find someone with three green orbs.

• Main phase starts again, but with the bosses swapped.