Wakfu Points (WP) are a resource used by certain special skills in the game. These skills are mostly strong or have adverse effects and WP are a way for the game to gate the use (or abuse of such skills). Unlike AP or MP which is restored at the beggining of every turn in a fight, WP do not replenish in a fight. They are only restored after battle. This means that your WP is limited to the base amount of 6 during every fight. However, this can be increased by skill points or by equips.