In game terms, this means that any spellcaster who is affected by this must make a willpower check to cast. Let's face it - having your blood vessels move around is rather distracting. Besides just being an icky sensation, it can also cost a person their life in battle. Should a victim be cut while the spell is in effect, he takes 2 points of damage per round thereafter from blood loss until he either dies or is healed. If a blunt weapon is used on the victim, then there is a 10% chance per hit that a blood vessel will burst, causing internal bleeding for 2 points of damage per round.