on damage:
    set maximum damage delay of victim to 0.1 ticks
    set {_fd} to getAtk(player's tool)
    set {_x} to random number between -1 and 1
    set {_y} to random number between 0.1 and 1
    set {_z} to random number between -1 and 1
    bind hologram "&c- %{_fd}%" to victim for 1 second offset by {_x}, {_y}, {_z}

on join:
    give player iron sword with nbt "{baseatk:10}"

function getAtk(item: item) :: number:
    if {_item} is air:
        stop
    set {_num} to tag "baseatk" of nbt of {_item}
    return {_nun}

command /weaponcreate <number>:
    permission: skript.admin
    trigger:
        give player player's tool with nbt "{baseatk:%arg-1%}"