by Jadefire on Dec 22, 2022
When you cast this spell, it becomes day.
When Solar Opposites enters the battlefield,
choose a nontoken creature you control and a creature card you own with equal or lesser mana
value from outside the game. Put the creature
card under the chosen creature as its back face.
(Treat them as a single card.)
The front face of the chosen creature has
daybound and its back face has nightbound.