Value: 1CP per rank
You are unusually vulnerable to one kind of energy-based attack (player’s choice). For every rank in this Comp, you suffer a -1 penalty to any d20 roll you make to avoid your chosen energy type (e.g., saves, skills, ability checks, etc.), and any d20 roll against you that uses that energy gains a +1 (e.g., attacks). In the case of opposed tests, your rolls take a -1, and the attacker’s roll takes no bonus.
You can take up to 5 ranks of this Comp for every energy type.