I found Leech SMP and it is a Survival lifesteal server where every fight matters.
When you kill someone you get stronger. When you die you lose a heart and it can be gone for good so people play careful but also super ruthless.
The server has active competitive PvP and it has clans so you can team up. You can also make alliances then betray each other later.
There is a real economy and progression plus constant events and updates so it feels like stuff is always happening.
