local ITEM_ID = 7777 -- Clickable item ID to add aura
local AURA_ID = 3 -- ID of the aura you want to add

local addAuraSystem = Action()

function addAuraSystem.onUse(player, item, fromPosition, target, toPosition, isHotkey)
    if item.itemid ~= ITEM_ID then
        return true
    end

    local defaultOutfit = player:getOutfit()
    if defaultOutfit.lookAura ~= 0 then
        player:sendTextMessage(MESSAGE_INFO_DESCR, "You already have this aura!")
        return true
    end

    player:addAura(AURA_ID)
    player:getPosition():sendMagicEffect(CONST_ME_MAGIC_RED)
    player:sendTextMessage(MESSAGE_INFO_DESCR, 'You have received a new aura!')
    item:remove(1)
    return true
end

addAuraSystem:id(ITEM_ID)
addAuraSystem:register()