Check your affinity in the Occulus. I believe this comes from being full Lightning affinity.
EDIT: Thank you, 220.127.116.11, for giving this person the correct information. Very helpful. Please make an account on the wiki.
Not Fire affinity, but lighning affinity. You gain "short circuit" debuff
Thank you for correcting me. I thought fire affinity sounded off, haha.
What do you think?