SuperiorSkyblock is a modern Skyblock core that brings many tweaks and changes to the old and lovely Skyblock game-mode. The core is optimized and it's designed to fit your needs.

Plugin Link:

https://www.spigotmc.org/resources/%E2%9A%A1%EF%B8%8F-superiorskyblock2-%E2%9A%A1%EF%B8%8F-the-best-core-on-market-%E2%9A%A1%EF%B8%8F-1-17-support.87411/