I found this hardcore SMP called Ten Chances and it is built for betrayal and chaos. It is 10 players with 10 lives each and you have one year to survive and become the last player or last team standing. When Day 365 hits whoever is still alive wins the big glory stuff like god tier loot and custom tags and bragging rights.

PvP is always on so you can get jumped anytime. If you kill someone you steal half a heart from their life count rounded down so fighting and backstabbing actually changes the whole season. Trust feels like a mistake here.

The server gets meaner the more lives you lose. At higher lives mobs are faster and creepers hit harder. In the middle range natural regeneration gets turned off and phantoms show up from day 1 and ores become rare. When you are down to 3 to 1 lives cursed events can trigger like Blood Moons and Boogeyman hunts and random Origins powers and ghost players and wither skulls raining.

Every week there are decrees that force drama like having to build in spawn town or losing a life or limits on armor. There are also community voted events that keep getting more insane like an Ender Dragon fight with slowness and a no sleep week and a Wither Storm invasion.