on damage:
    if attacker is a player:
        if victim is a entity:
            if attacker has permission "uzyciemiecza":
                if attacker's tool is diamond sword with lore "Opiss":
                    cancel event
                    send "&4Twoj poziom jest zbyt niski." to attacker
                    stop

command /lore:
    trigger:
        give 1 diamond sword with lore "Opiss" to player