This account was specifically created to source cards for the Puca Sweepstakes. It uses points from previous sweepstakes to source cards for future sweepstakes. Points in this account are destroyed monthly. For more information about point destruction see out Economic Dashboard:

https://pucatrade.com/help/item/economics

This blog post explains the entire process:
https://pucatrade.com/articles/2017/community/jonathan_medina/sweepstakes_changes