Possession: Whoever holds the Black Diamond, Eclipso is able to take control of that person's body with Unearthly ability. Eclipso's own body becomes the victim's body. He can control the body's movements, but control is far from complete.
Body Resistance: Unearthly
True Flight: Monstrous
Regeneration: Amazing
Limitation
Vulnerable to Sunlight: Eclipso loses all powers and abilities when in pure sunlight.