Most of Affliction warlock's strength in Mythic+ is due to the prevalence in power per
灵魂碎片 utility. Before, you would use a single
灵魂碎片 to cast a single
痛苦无常 on one target. Not very impactful, except for focused single target damage. Your only real AoE choice was to spam
腐蚀之种.
Now, with the addition of
灾难狂欢, you now have a strong nuke that hits every single target affected by your DoTs. To break down what a quick AoE pull could look like for an Affliction Warlock now, with no major cooldowns, you can throw a few
痛楚s out, cast one
腐蚀之种 to apply
腐蚀术 to everything, cast
邪恶污染, then spam
灾难狂欢 until you run out of shards. While this may not be the most ridiculous AoE output of any class (see Destruction Warlocks), it's essentially available for every single pull. In addition to this, Affliction is typically known to be one of the best scaling specs in the game - with endgame level secondary stats, it's no surprise that a spammable AoE nuke has nudged Affliction into the limelight.