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Putrid Sludges are oozes located in the Nighthold.
- Slime Pool - On death, the slime explodes leaving behind a Slime Pool.
- Slop Burst - The slime continually bursts, inflicting 166250 to 183750 Nature damage every 4 sec to all enemies.
- Sludge Crawl - The slime fixates on a random enemy and chases them leaving behind puddles of searing ooze.
- Vile Sludge - Sludge drips off of the creature, creating pools at random destinations that inflict 332500 to 367500 Nature damage every 1 sec to enemies within them.