A reverse encounter: you win by healing the Avatar of Sethraliss to full while waves of Faithless adds try to stop you, and the Essence Defiler's Defiling Taint channel makes her immune to healing until it dies. Keys fall apart when Shadowlash Tormentors reach the healer, when the Corrupted Guardian's death explosion and lifeforce soaks are mishandled, or when uninterrupted Flame Shocks stack damage the healer cannot spare.
Kick list: Flame Shock
The Essence Defiler channels dark energy into the Avatar of Sethraliss, preventing all external healing on her while the channel runs.
Swap the whole group to the Essence Defiler the second it spawns; while its channel runs, your win condition is frozen.
The Corrupted Guardian slashes the tank for very heavy Physical damage plus a stacking Shadow damage-over-time effect that lasts 25 seconds.
The tank mitigates every cast and the group kills the Guardian quickly, because the stacking DoT punishes slow kills hard.
Polluted energy erupts from the Corrupted Guardian, dealing massive Shadow damage to players within 20 yards and forming Corrupted Lifeforce on the ground.
Kill the Guardian in a corner, be more than 20 yards away when it erupts, then soak the Corrupted Lifeforce with exactly one player per puddle since each soak applies a vulnerability.
A hex afflicts one player with ticking Shadow damage, and when it is removed or expires it bursts on players within 10 yards and releases a Hex Muck mire that turns anyone inside it into a frog.
The hexed player walks out of the group before the debuff ends, drops the muck on the edge of the room, and nobody ever stands in the frog mire.
The Twisted Hexxer sears a player with Fire damage plus a heavy 8 second damage-over-time effect.
Interrupt every Flame Shock cast; this is the one mandatory kick of the fight and letting it through drains healing the Avatar needs.
Faithless Tormentors fixate on the closest healer and every strike stacks a 5 percent reduction to that healer's healing done.
Crowd-control and slow the Tormentors before they reach the healer, and the healer kites while the group burns them down.
The Avatar of Sethraliss instantly executes Faithless Tormentors that drop below 25 percent health and heals herself for a portion of her maximum health per kill.
Push Tormentors under 25 percent and let the Avatar take them; every execute is free progress toward the win condition.
Pick up the Corrupted Guardian instantly, mitigate Tainted Strike, and drag him to a corner so Unstable Corruption and its ground effects do not eat the playable room.
Your throughput is the kill condition, so pump healing into the Avatar whenever no Defiling Taint channel is active, and kite fixating Tormentors while you do it.
Swap to Essence Defilers on spawn, hold interrupts for Flame Shock, and finish Tormentors into the 25 percent execute window instead of overkilling them.
Soak exactly one Corrupted Lifeforce after the Guardian dies, carry Latent Hex away from the group before it bursts, and dodge the chamber's electric jolts all fight.
Tyrannical: The add waves hit harder and live longer, so each Defiler denies more healing and the encounter stretches into extra Latent Hex and Shadowlash overlaps; assign priority damage to Defilers before the pull, lean on Siphon the Weak executes to claw back progress, and hold Bloodlust for a wave where a Guardian and a Defiler are up together.
Sources: Icy Veins - Temple of Sethraliss Dungeon Guide (updated for Season 2, Aug 11 2026) · Wowhead - Temple of Sethraliss Season 2 M+ overview · Wowhead - Temple of Sethraliss Mythic+ Route Guide · Wowhead - Adderis encounter journal NPC page (Season 2 ability data) · Warcraft Wiki - Temple of Sethraliss
