Mana Whorl

Stealth

+14 (trained) to identify as dangerous quicksand; +20 (expert) to recognize its magical properties

Disable

DC 26 Arcana (expert) to feed magic into the whorl and temporarily stabilize it for a few minutes; feed the whorl a number of spellcasters and magic items with a combined 10 levels (for instance, a 4th-level cleric with two 3rd-level magic items) to stabilize it for 1 week; or feed the whorl a number of spellcasters and magic items with a combined 20 levels to stabilize it permanently. Spellcasters and magic items fed to the whorl are devoured whole.

Submerge [Reaction]

Routine

(1 action) On its initiative, the whorl pulls down any creature within it that can cast spells or that is wielding a magic item.