The first time you use chaos bolt each battle, determine a random energy type. The spell deals that type of damage each time you use it that battle.
You don't take the –2 penalty for attacking a far away enemy with the spell.
If you are a champion-tier sorcerer, roll any chaotic benefit gained with this spell on the epic chaotic benefits table. If you are an epic-tier sorcerer, choose the epic chaotic benefit you want instead of rolling.