Combat is turn-based, with characters going individually based on their initiative. Each character can make five types of actions: free, no, full-round, move, and standard. Characters can take a move action and a standard action each turn. Full-round actions count as a use of both actions. Free actions take a negligible amount of time to perform, so they count as neither actions. No actions also count for neither actions, but they require special circumstances in order to be performed. Characters can choose special attacks to perform or spells to cast, and they can also choose to attack or cast in specific ways. Defensive casting and fighting, dealing non-lethal damage, tripping an opponent, and coup de graces are examples of particular actions in combat. Characters have a set yet semi-random number of hit points based on their level, class, and Constitution score. Upon being reduced to zero hit points, a character is staggered, and a full round action will cost him or her one hit point. A creature with hit points between −1 and −9 is unconscious, and loses one hit point a round. The character has a 10% chance of stabilizing, which will stop the loss of hit points but will keep the character unconscious. Other characters can stop this loss of life through a successful heal check. If a character or creature reaches −10 hit points, it dies.