Nauseous Crawlers' stun attack is extended by any slows affecting them, potentially stunlocking you for 30+ seconds with Sevagoth's Gloom active

[StygianSteel]

Nauseous Crawlers have an attack where they spit acid at you and stun you for a short duration (around 1.5s - 2.0s). However, this stun duration is increased when the Crawler is slowed down by any source, such as cold status procs, Nova's Molecular Prime, Sevagoth's Gloom, etc. The stun duration is increased in accordance with the slow amount, so a 75% slow will make the Crawler's stun last 4x longer, while Sevagoth's 95% slow will cause the stun to be a whopping 20x longer, basically guaranteeing a death in most missions.