Limited Lives
This mod imposes a limit on the number of lives available in each game world. By default, every time you die, you lose half a heart from your permanent health pool. This means that with each respawn, you'll have fewer hearts and health points remaining. When you completely exhaust all available lives, depending on the configuration settings, you will either be switched to Spectator mode or temporarily banned from the server for a specified period.
To check how many lives you have left or how much time remains until your next respawn, use the commands /ll or /limitedlives in the chat.
To set the death count, execute the command: /ll <set> <player> <deaths>