Should I choose to be merciless, I can disable the power of others permanently. Besides, my negation can be carried out from a distance, wherein I unleash a wave or force field that nullifies any attacks or superpower in its way. Thanks to negation, I am resistant to mental abilities such as mind control or illusion, since I would have nullified those abilities should others try to use them on me. My negation exists in several forms, including spell negation (I am immune to any spell, curse or what not laid on me.), immortality negation (the power to deny the immortality of immortal beings, and kill them) and so on. I can decide whose powers to nullify as well as the duration of nullification (temporary or permanent).
I have control over supernatural forces, including ghosts, demons, or other astral planes. This implies that I am able to take on several supernatural forms and their respective abilities. For instance, I am able to transform into an ethereal fairy, thus gaining abilities such as omni-shifting, immortality, life-force manipulation and possession. On days when I choose not to transform into supernatural beings, I can still access the beings’ abilities, albeit on a less powerful scale. Besides transforming into various supernatural beings, I am also able to perform spiritual related feats such as necromancy.
My regeneration ability is advanced enough to cause my body to cease aging as the cells are regenerating and dying in equilibrium, granting me immortality (When I am ready to move on, I can just nullify my regeneration ability). I am also able to heal others, physically and emotionally (I can’t grant them immortality).