Inside the Nightmare dimension, the mobians who live there absorb energy for it, giving them an unkown type of power. This energy kept inside them, is released when it's needed, like- for example, a critical state of battle. To activate this form is necessary to have at least done one of these:

-Have been at least once in the Nightmare Dimension

-Have been in contact with a suspicious energy source (Ex. Neon Crystals)

-Being exposed to an enemy that is possesed by Dark Zone

-Has fused with a mobian that has the Electrified Heart ability

-Has in grip a Nightmare Wrap Ring

This ability is like a gift from heaven for some mobians. But, it also has been a pain for some. So...*smirks* Be careful if you ask for a fusion of your OC with my OC's. He or she will have a 85% chance to obtain the gift

(HEHE I HAVE JUST SPOILED YOU SOME INFO ABOUT A FUTURE RP I'M MAKING X'DDDD)