Arcane knowledge gained from the elemental plane of fire, how dare they think they could be saved?
Pyroclastic Inverter:
Once per short rest.
As an action on a creature that has fire resistance within 60ft. Force them to make a CON Save DC 10+ INT Mod.
On success, nothing occurs.
On failure, they have their resistance inverted and their fire resistance reversed to Vulnerability. On the start of their next turn, they can make the same saving throw, ending the effect on success. This effect ends after 1 minute.
At 9th Level, this ability can invert target creatures that have fire immunity, turning their immunity to vulnerability.
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