Dark Magic

The user is able to perform a legendary form of magic that allows the user to cast magical spells and feats derived from shadows and darkness. User can create, shape and manipulate darkness and shadows. By itself, darkness is mostly used to cloud everything into total darkness, but by accessing a dimension of dark energy it can be channeled to a variety of effects, both as an absence of light and a solid substance: one can also control and manipulate the beings that exist there, create and dispel shields and areas of total darkness, create constructs and weapons, or teleport one's self through massive distances via shadows.

Abilities

 * Soul Summoning - The user can summon spirits from beyond the grave in order to commune or serve the user. In addition, the user is able to seal a soul or a part of it inside body or object.
 * Darkness Blast - The user can create and release blasts of dark energy and control the intensity of their projectiles, the bolts aren't weak but they aren't as powerful as a full powered attack.
 * Shapeshifting - The user can shapeshift their form, transforming and reshaping themselves potentially down to their genetic and cellular structure. They can impersonate others or enhance their own body for combat, either by turning into animals, humanoids, monsters, or by making the body stronger.
 * Spell Negation - The user can negate any and all forms of spells ranging from the most powerful of spells to least and faint spells, possibly dispelling them completely.
 * Puppet Mastery - The user takes control over motor functions of others against their will as if they were a marionette, subjects are still conscious, but can’t resist the user's puppet control.

Demon Summoning
User can summon demonic beings from other worlds for a variety of reasons such as helping in combat or in granting power to increase the capabilities of the user. The user is capable of using demonic magic to achieve several feats such as creating, destroying and reconstructing anything, sometimes even to warp reality. This type of magic is usually used by a dark and evil entity or those related to them.

Users are able to acquire power from demonic forces. Often times, they're cursed with the evil from unholy items, spirits, or concepts. Sometimes their bodies are warped and twisted into a hellish parody of their previous state, becoming demons. Some are able to switch in and out of their new forms at will. Those who are too weak to control the power will lose their sanity as well as their souls. Demon summoning was a forbidden spell for many reasons:
 * Without precautions, demons may turn against their summoner.
 * Summoned demons may become uncontrollable and put the summoner in danger.
 * Summoning demons very likely takes immense amounts of power.
 * May require a contract to summon specific demon.
 * Summoning may require a sacrifice, such as blood, wealth or life.
 * Certain symbols, carvings or rituals may be needed to summon a given demon.