Description: You have 9 life and 1 health, after death you spend 1 life. If you have lost all lives, you will be put into observer mode. There are also points you get for completing achievements (you can add a data pack), for points you can buy life.
Commands: /givelife <player> <count> - give life /dellife <player> <count> - remove life /addpoint <player> <count> - add point /delpoint <player><count> - remove point /buylife - buying life /info - information about life and point