--Mecha Blade Night Stalker
local m=88880212
local cm=_G["c"..m]
function cm.initial_effect(c)
	aux.AddXyzProcedure(c,cm.mfilter,4,2,cm.ovfilter,aux.Stringid(m,0),2,cm.xyzop)
	c:EnableReviveLimit()
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(16037007,0))
	e1:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetRange(LOCATION_MZONE)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e1:SetCode(EVENT_CHAINING)
	e1:SetCountLimit(1,m)
	e1:SetCondition(cm.discon)
	e1:SetCost(cm.discost)
	e1:SetTarget(cm.distg)
	e1:SetOperation(cm.disop)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetCode(EFFECT_DESTROY_REPLACE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTarget(cm.reptg)
	c:RegisterEffect(e2)
end
--effect
function cm.ovfilter(c)
	return c:IsFaceup()
		and ((c:IsType(TYPE_XYZ) and c:GetOverlayGroup():IsExists(Card.IsCode,1,nil,88880005))
		or (c:IsCode(88880006) and c:GetOverlayGroup():GetCount()>0))
end
function cm.xyzop(e,tp,chk,mc)
	if chk==0 then return mc:CheckRemoveOverlayCard(tp,1,REASON_COST) end
	mc:RemoveOverlayCard(tp,1,1,REASON_COST)
end
function cm.mfilter(c)
	return c:IsSetCard(0xffd)
end



function cm.tgfilter(c,tp)
	return c:IsFaceup() and c:IsControler(tp) and c:IsSetCard(0xffd)
end
function cm.discon(e,tp,eg,ep,ev,re,r,rp)
	if not re:IsHasProperty(EFFECT_FLAG_CARD_TARGET) then return false end
	local tg=Duel.GetChainInfo(ev,CHAININFO_TARGET_CARDS)
	return tg and tg:IsExists(cm.tgfilter,1,nil,tp) and Duel.IsChainDisablable(ev)
end

function cm.discost(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 cm.distg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	if re:GetHandler():IsDestructable() and re:GetHandler():IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,0,0)
	end
end

function cm.disop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local rc=re:GetHandler()
	local og=rc:GetOverlayGroup()
	if og:GetCount()>0 then
		Duel.SendtoGrave(og,REASON_RULE)
	end
	if Duel.NegateActivation(ev) and c:IsRelateToEffect(e) and rc:IsRelateToEffect(re) and c:IsType(TYPE_XYZ) then
		rc:CancelToGrave()
		Duel.Overlay(c,Group.FromCards(rc))
	end
end



function cm.reptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,1,REASON_EFFECT) end
	if Duel.SelectEffectYesNo(tp,e:GetHandler(),96) then
		e:GetHandler():RemoveOverlayCard(tp,1,1,REASON_EFFECT)
		return true
	else return false end
end