Transmute Weakness

Choose one creature you can see within range and choose acid, cold, fire, lightning, or thunder. The target must make a CON save or gain vulnerability to the chosen damage type for the duration. The target repeats the save at the end of each of its turns, ending the effect on a success.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.