My server is basically using a plugin to create magic spells and it has PvP, PvE, Quests and Exams to Rankup. When players Rankup, they get another row of hearts. I can easily adjust their total amount of hearts using health boost through command blocks and tags but I'd like if they automatically get their hearts upon respawn and having them full instantly, rather than setting up a healing system and command blocks to adjust their total health :)