A minecraft datapack to add a shared player lifepool to hardcore servers.
This simple datapack respawns players after they die in hardcore. When a player repsawns, they consume one of the lives in the life pool, of which is shared by all the players on the server. When all the lives run out, it's game over, and every player is set to spectator.
If you wish to increase lives, you can use /trigger livesTrigger set <extraLives>, where extraLives is the number of lives you would like to add. This will play a little fanfare to acompany the increase.
Inspired by The HardLives Datapack