This is a datapack based on the Friend or Foe SMP by SB737.
The FoF S2 series: click me
(My definiation might be different from the original SMP, but this definition is based on my datapack) Friend or Foe is a smp where PVP turns off and on every 15 minute. Each player has 10 lifes, when they die to a player they lose one and to get one u have to complete certain tasks. If a player losses all his lives, they he dies. There is also a tracker, they can be crafted to track a certain player. Totem is undroppable, Golden apples are uncraftable and villager trading is ban.
With the tracker u can track down a player of your choice.
If you do TAB in ur server, u will see all players and a number along their name, this number is their ID.
To track a certain player, u have to do the command /trigger IDtrack set {playerid}, before using the tracker, if you want to get the ID of the player you want to track just do TAB and see his id and put it in the {playerid} field.
The tracker is a compass item but the compass won't point in the direction of the player, when u hold the tracker and have selected a player, it will reveal the coordinates and dimension of the selected player every 30 second till you get closer (25 blocks) to him and it reveals for the final time before breaking.
!Tracker Recipe, diamond block in all 4 sides, 2 eye of ender in top-right and bottom-left corner and 2 emerald block in top-left and bottom-right side
Completing each task gives u a life.
click me

A datapack based on the Friend or Foe SMP.