function onStatsChange(cid, attacker, type, combat, value)

local _TYPES = {
    ["fire"] = {efect = 36, dmg = COMBAT_FIREDAMAGE},
    ["ice"] = {efect = 42, dmg = COMBAT_ICEDAMAGE},
    ["earth"] = {efect = 45, dmg = COMBAT_POISONDAMAGE},
    ["death"] = {efect = 17, dmg = COMBAT_DEATHDAMAGE},
    ["energy"] = {efect = 11, dmg = COMBAT_ENERGYDAMAGE},
    ["holy"] = {efect = 49, dmg = COMBAT_HOLYDAMAGE}
}
local slotRight = getPlayerSlotItem(attacker, 5)
local slotLeft = getPlayerSlotItem(attacker, 6)

    local _HAND = getHand(attacker) == "right" and slotRight or slotLeft
    local _TYPE = _TYPES[getWandDmgType(_HAND.itemid)]
    local _EXTRA = getWandExtraDmg(_HAND)
    local _MIN, _MAX = getWandDmg(_HAND.itemid) + _EXTRA, getWandDmg(_HAND.itemid) + _EXTRA

    if _MIN > _MAX then
       _MIN = _MAX
    end

    if _EXTRA > 0 then
        if getCreatureCondition(cid, CONDITION_MANASHIELD) then
            doTargetCombatMana(attacker, cid, _MIN, _MAX, _TYPE.efect)
        else
            doTargetCombatHealth(attacker, cid, _TYPE.dmg, - _MIN, - _MAX, _TYPE.efect)
        end
    end

    return true
end