--妖精王 アルヴェルド
function c28290705.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,aux.FilterBoolFunction(Card.IsAttribute,ATTRIBUTE_EARTH),4,2)
	c:EnableReviveLimit()
	--addown
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(28290705,0))
	e1:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(c28290705.adcost)
	e1:SetTarget(c28290705.adtg)
	e1:SetOperation(c28290705.adop)
	c:RegisterEffect(e1)
end
function c28290705.adcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,1,REASON_COST) end
	e:GetHandler():RemoveOverlayCard(tp,1,1,REASON_COST)
end
function c28290705.filter(c)
	return c:IsFaceup() and c:IsAttribute(0xffff-ATTRIBUTE_EARTH)
end
function c28290705.adtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c28290705.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
end
function c28290705.adop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(c28290705.filter,tp,LOCATION_MZONE,LOCATION_MZONE,nil)
	local tc=g:GetFirst()
	while tc do
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-500)
		e1:SetReset(RESET_EVENT+0x1fe0000)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_UPDATE_DEFENCE)
		tc:RegisterEffect(e2)
		tc=g:GetNext()
	end
end
