Eclipso possesses vast magical powers that allow him to perform such godlike feats as manipulation of the weather and seas to cause natural disasters (floods, thunderstorms, etc.), increasing his size to that of a giant, absorbing the powers of the Spectre and projecting powerful energy from his hands that can stun or kill his opponents. As a former servant of God, Eclipso is able to "speak" the angelic language; a combination of harmony, discordance, vibration and telepathy. In later publishing, his powers have grown ever still, showcasing vast cosmological if not reality bending capability at his peak, being able to cause a solar eclipse drowning the entire world in darkness.