--Mysterious Star Dragon
function c53313922.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,aux.FilterBoolFunction(Card.IsSetCard,0xcf6),7,2,nil,nil,99)
	c:EnableReviveLimit()
	--If this card is Xyz Summoned: You can target cards on the field equal to the number of materials attached to this card, -1; destroy them.
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	e2:SetRange(LOCATION_MZONE)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e2:SetCategory(CATEGORY_TOGRAVE)
	e2:SetCondition(function(e) return e:GetHandler():IsSummonType(SUMMON_TYPE_XYZ) end)
	e2:SetTarget(c53313922.tgtg)
	e2:SetOperation(c53313922.tgop)
	c:RegisterEffect(e2)
	--You can detach 2 materials from this card, then target 1 face-up monster your opponent controls; its ATK becomes half its current ATK, and if it does, this card gains that lost ATK and negate that target's effects.
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_MZONE)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE+CATEGORY_DISABLE)
	e3:SetCost(c53313922.cost)
	e3:SetTarget(c53313922.target)
	e3:SetOperation(c53313922.operation)
	c:RegisterEffect(e3)
end
function c53313922.tgtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local ct=e:GetHandler():GetOverlayCount()-1
	if chkc then return ct==1 and chkc:IsOnField() end
	if chk==0 then return Duel.IsExistingTarget(nil,tp,0,LOCATION_ONFIELD,ct,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(53313922,2))
	local g=Duel.SelectTarget(tp,nil,tp,0,LOCATION_ONFIELD,ct,ct,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,ct,0,0)
end
function c53313922.tgop(e,tp,eg,ep,ev,re,r,rp)
	local tg=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	local sg=tg:Filter(Card.IsRelateToEffect,nil,e)
	if sg:GetCount()>0 then
		Duel.Destroy(sg,REASON_EFFECT)
	end
end
function c53313922.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,2,REASON_COST) end
	e:GetHandler():RemoveOverlayCard(tp,2,2,REASON_COST)
end
function c53313922.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(1-tp) and chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,0,LOCATION_MZONE,1,1,nil)
end
function c53313922.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) and not tc:IsImmuneToEffect(e) then
		local atk=c:GetAttack()
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_SINGLE)
		e3:SetCode(EFFECT_SET_ATTACK_FINAL)
		e3:SetReset(RESET_EVENT+0x1fe0000)
		e3:SetValue(math.ceil(atk/2))
		tc:RegisterEffect(e3)
		if c:IsRelateToEffect(e) and c:IsFaceup() then
			local e5=Effect.CreateEffect(c)
			e5:SetType(EFFECT_TYPE_SINGLE)
			e5:SetCode(EFFECT_UPDATE_ATTACK)
			e5:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
			e5:SetReset(RESET_EVENT+0x1fe0000)
			e5:SetValue(math.ceil(atk/2))
			c:RegisterEffect(e5)
			Duel.NegateRelatedChain(tc,RESET_TURN_SET)
			local e1=Effect.CreateEffect(c)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_DISABLE)
			e1:SetReset(RESET_EVENT+0x1fe0000)
			tc:RegisterEffect(e1)
			local e2=e1:Clone()
			e2:SetCode(EFFECT_DISABLE_EFFECT)
			e2:SetValue(RESET_TURN_SET)
			tc:RegisterEffect(e2)
		end
	end
end