Night will be as Day

Take an extra turn after this one.
As an additional cost to cast this spell, exile a
human prophet, then at the beginning of your opponents upkeep, return it to the battlefield
under your control.
"There shall be great lights in heaven, insomuch that
in the night before he cometh there shall be no
darkness, insomuch that it shall appear unto man as
if it was day." (Helaman 14:3)