local NPC_ID = 190020
local BUFF_IDS = {53307}

function BuffOnSight(event, creature, player)
    if (player:GetObjectType() == "Player" and creature:IsWithinDistInMap(player, 15)) then
        for k, v in ipairs(BUFF_IDS) do
            if not player:GetAura(v) then
                player:AddAura(v, player)
            end
        end
    end
end

RegisterCreatureEvent(NPC_ID, 27, BuffOnSight)