Eclipse

You create an illusory eclipse of the moon, sun, or multiple moons/suns in the minds of creatures within range. Creatures with an Intelligence score of 2 or lower are unaffected. The eclipse causes the visible world to gradually darken for affected creatures based on their current lighting conditions:

• In Sunlight: Over 20 minutes, Bright Light becomes Dim Light, and then Dim Light becomes Darkness.
• In Dim Light: After 10 minutes, Dim Light becomes Darkness.
• In Darkness with a visible moon: After 10 minutes, the moonlight is extinguished, leaving only Darkness.

Creatures with Darkvision perceive the illusory Darkness as Dim Light within their Darkvision range. Creatures without Darkvision or a light source are Blinded. Light sources within the area appear to illuminate the Darkness normally to affected creatures.

The eclipse is purely illusory and does not alter actual light levels. For instance, sunlight still affects creatures with Sunlight Sensitivity. A creature that suspects the illusion can make an Intelligence saving throw. On a successful save, it recognizes the illusion, and the spell ends for that creature. If an unaffected creature uses an action to try to convince others that the eclipse is illusory, those creatures can make an Intelligence saving throw. On a successful save, they recognize the illusion; otherwise, they continue to believe it.

Creatures with Truesight are still affected by the illusion as it operates in their minds. Creatures that cannot see the moon(s) or sun(s) (e.g., those indoors without a window) are unaffected.