Edward's Emergence

Anytime you are insulted or roll a 1 on a skill check, you become irate and must attempt to keep yourself in control.  Make an Intelligence Saving Throw with a DC of 12.  On a failed save, your alter ego takes over your consciousness.  Additionally, any time you take more than 20% of your hit points in damage, your alter ego takes over with no opportunity to make a saving throw.

This condition is non-magical, cannot be dispelled, and remains until you are knocked unconscious, incapacitated, charmed, or making a successful Intelligence Saving Throw.  Each time your complete a short or long rest, you must make a saving throw to attempt to end the condition.  When doing so after a long rest, you do so with advantage.