You can change maximum health.
Commands:
/maxhealth set <health> [points|rows|hearts]
- Change maximum health.
/maxhealth query
- See maximum health.
Permission Nodes:
maxhealth.*
- default: op
- Players to have this permission have full control.
maxhealth.set
default: op
- Player to have this permission can set the maximum health of a specific player.
maxhealth.query
default: op
- Player to have this permission can see the maximum health of a specific player.