Editing Mutants and Masterminds (section)

===Descriptors and Power Stunts===
Descriptors are how the system ''does'' care if an effect like damage is caused by a magical fireball or mundane sword. Characters can have immunity or enhanced protection against a descriptor, like a hero made of fire who can ignore fire attacks. Some characters may have ''weakness'' to a certain descriptor as a complication, like the original Green Lantern's weakness to wood. Both of these can also be bestowed by the environment; being underwater nerfs fire attacks while enhancing sonic powers for example.

Descriptors are also the foundation for one of the unsung mechanics of the system: power stunts. By spending a hero point or taking a level of fatigue, you can make up a one-use Alternate Effect for one of your powers, letting you do exactly what you need to as long as it matches the original power's descriptors and points cost. For example, an electricity using hero might use his lighting blasts (Damage) to restart his dying girlfriend's heart (Healing) instead. Since magic can do anything with the right spell, it's one of the most powerful descriptors. Power stunts with devices, like Batman pulling ''exactly'' the right item from his utility belt (even if it's not actually an effect listed on his utility belt power) requires a hero point (see below) and can't be accomplished by fatigue. This is one of the downsides of taking devices in exchange for their lower points cost.