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[Nagi Demon Serpent (Silver Level BOSS): LV15]

[Toxic Mist: For every 10% decrease in Health Points, it will release a large amount of toxic mist, obscuring all vision and dealing 200 damage per second for 25 seconds within a 20-meter radius.]

[Demonic Body Regeneration: If not damaged for 10 seconds, it will trigger the Demonic Body Regeneration effect, restoring 1% of its maximum Health Points per second for 10 seconds.]