Some hotfixes have been pushed to the Sepulcher raid which nerfs the Mythic Anduin encounter for the Race to World First and nerfs to Normal and Heroic Jailer.
Mythic AnduinThe damage of Remorseless Winter which occurs during the Intermission phase of Mythic Anduin has been nerfed by 20%.
The presence of the Fallen King invokes a raging storm that inflicts 1873614989 Shadowfrost damage every 1 sec to all players. This effect stacks, increasing in stack count every 5 sec. Effect #1 Effect #1 School Damage Value: 2520 Difficulty: Mythic Normal and Heroic JailerThe healing absorb of Dominating Will which occurs in the last phase of the Jailer encounter has been nerfed on Normal and Heroic difficulties.
The Jailer applies a shield that absorbs the next 791019 healing, divided evenly amongst targets within 8 yards of a target location. Upon expiration all targets are afflicted with Domination. Effect #2 Effect #1 Apply Aura: Mod Healing Absorb % Value: 650600 Difficulty: Normal Effect #1 Apply Aura: Mod Healing Absorb % Value: 1000800 Difficulty: Heroic Xy'moxOn Xy'mox, the Massive Blast is cast by Xy Acolyte during intermissions and also Cartel Overseer on Mythic difficulty. The ability's width has been decreased from 60 degrees to 40 degrees.
Massive Blast An Arcane barrage is unleashed, inflicting 59955 Arcane damage in a frontal cone and increasing damage taken by Massive Blast by 30% for 30 sec. This effect stacks ConeDegrees changed to 40 from 60 Read more on wowhead.com