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
challenge focused gameplaycozy community vibescrate reward huntingfair play rulesSky Island Survival
GG.MINEWIND.NET New Server IPOneBlock Boss Fights on LegionCraft
Block by block survivalCrate reward systemGear progression chaseResource grind modeReward crate hunts
I found LegionCraft and it is a OneBlock survival server where everything is about building up from a single block and pushing your island forward.
There are challenging bosses and when you beat them they can drop keys for rare loot. You can use keys on crates to get gear and rewards.
It also has chunk hoppers so you can automate parts of your island. The server says it is not pay to win so it feels more fair while you build grind fight and loot.GG.MINEWIND.NET New Server IP