I found a OneBlock server called LegionCraft and it is all about building up from your own island and grinding to get stronger.
There are challenging bosses and when you beat them they can drop keys. You can use those keys for rare loot and there are crates with epic gear and rewards.
You can also use chunk hoppers to automate parts of your island. The server says it is not pay to win so it feels more fair if you just want to play and grind.
OneBlock Bosses And Key Loot
GG.MINEWIND.NET New Server IPLegionCraft OneBlock With Bosses And Crates
fair play economyGear reward huntingGroup island playProgression survival gameplaySurvival challenge map
I found LegionCraft and it is a OneBlock survival server where you start small and keep breaking blocks to grow your island. It feels like every block matters because you are always trying to push forward.
There are challenging bosses and when you beat them they can drop keys. You can use keys on crates to get rare loot and epic gear so fighting is actually worth it.
It also has chunk hoppers so you can automate parts of your island. The server says it is not pay to win so it is meant to feel fair while you build grind fight and loot.GG.MINEWIND.NET New Server IP