The phrase "to set a sun" means to deliberately cause someone's downfall or ruin, often by ruining their reputation or success.
Sentences with «to set a sun»
Living, expansive environments featuring a rising and setting sun provide unique experiences for every player. (xbox-360.co.za)
This is the never setting sun and the empire built around it truly lives in an eternal day without night. (faith.org.uk)
The swimming pool features a modest hard wood pool side deck, furnished with four single set sun loungers and four sets of dining table. (giliislandstravel.com)