I published a post about improving my rental income and shared it on Publish0x as well.

https://peakd.com/hive-167922/@jfang003/buying-cards-and-building-a-passive-rental-income-source-in-splinterlands
https://www.publish0x.com/jfang003/splinterlands-buying-cards-and-building-a-passive-rental-inc-xrneygy