Level Loss

A character who loses a level instantly loses one Hit Die. The character’s base attack bonus, base saving throw bonuses, andspecial class abilities are now reduced to the new, lower level. Likewise, the character loses any ability score gain, skill ranks, and any featassociated with the level (if applicable). If the exact ability score or skill ranks increased from a level now lost is unknown (or the player hasforgotten), lose 1 point from the highest ability score or ranks from the highest-ranked skills. If a familiar or companion creature has abilitiestied to a character who has lost a level, the creature’s abilities are adjusted to fit the character’s new level.

The victim’s experience point total is immediately set to the midpoint of the previous level.