[Corinthian]

The main problem with the second sun spell is that it is a troll global that does little to benefit you and much to anger your neighbors. Even if it only costed 0 gems it might still not be worth it because diplomacy is gold in this game.

And also, compare it to Gift of natures bounty will ya. At best this spell can give you +15% to your income. At best GoNB will give you 200% to your income. It also dont piss of your neighbors in the same way. (Though maybe your income graph will.)