To Develop: 378,000 gp; 8 days; 15,1200 XP. Seeds:
conjure (DC 21),
transport (to move disk into position 100 miles up) (DC 27).
Factors: increase mass by 1,000% (+40 DC), spread mass into paper-thin disk (ad hoc +2 DC), keep disk in place for 8 hours (ad hoc +10 DC).
Mitigating factors: increase
casting time by 9 minutes (-18 DC), burn 4,000 XP (-40 DC).
With this spell, the character can create a limited eclipse, as though a heavenly body moves between the sun and the earth. The landscape within a five-mile radius of the character's location experiences the dimming of the sun as a disk the character creates passes in front of it, culminating in a complete blackout and accompanying coronal
ring. The eclipse follows the character across the landscape for up to 8 hours, or until the sun goes down, or until the character dismisses the eclipse. The character does not need to concentrate on the eclipse while it lasts.