--魂の結束－ソウル・ユニオン
local s,id,o=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_REMOVE+CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON+CATEGORY_GRAVE_ACTION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetHintTiming(TIMING_DAMAGE_STEP,TIMING_DAMAGE_STEP+TIMINGS_CHECK_MONSTER+TIMING_END_PHASE)
	e1:SetCountLimit(1,id+EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.atkfilter(c)
	return c:IsSetCard(0x3008) and c:IsType(TYPE_MONSTER) and c:GetAttack()>0
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return false end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil)
		and Duel.IsExistingTarget(s.atkfilter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local g=Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil,tp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,s.atkfilter,tp,LOCATION_GRAVE,0,1,1,nil)
end
function s.filter1(c,e)
	return c:IsAbleToRemove() and not c:IsImmuneToEffect(e)
end
function s.filter2(c,e,tp,m,f,chkf)
	return c:IsType(TYPE_FUSION) and c:IsSetCard(0x3008) and (not f or f(c))
		and c:IsCanBeSpecialSummoned(e,SUMMON_TYPE_FUSION,tp,false,false) and c:CheckFusionMaterial(m,nil,chkf)
end
function s.cfilter(c)
	return c:IsSetCard(0x3008) and c:IsType(TYPE_NORMAL)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local stg=Duel.GetTargetsRelateToChain()
	local mc=stg:Filter(Card.IsLocation,nil,LOCATION_ONFIELD):GetFirst()
	local gc=stg:Filter(Card.IsLocation,nil,LOCATION_GRAVE):GetFirst()
	if not mc or not gc then return end
	if not mc:IsImmuneToEffect(e) then
		local atk=gc:GetAttack()
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(atk)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_PHASE+PHASE_END)
		mc:RegisterEffect(e1)
		if not mc:IsHasEffect(EFFECT_REVERSE_UPDATE)
			and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE+LOCATION_GRAVE,0,1,nil) then
			local chkf=tp
			local mg1=Duel.GetMatchingGroup(s.filter1,tp,LOCATION_GRAVE,0,nil,e)
			local sg1=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg1,nil,chkf)
			local mg2=nil
			local sg2=nil
			local ce=Duel.GetChainMaterial(tp)
			if ce~=nil then
				local fgroup=ce:GetTarget()
				mg2=fgroup(ce,e,tp)
				local mf=ce:GetValue()
				sg2=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg2,mf,chkf)
			end
			if (sg1:GetCount()>0 or (sg2~=nil and sg2:GetCount()>0)) then
				::cancel::
				if Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
					local sg=sg1:Clone()
					if sg2 then sg:Merge(sg2) end
					Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
					local tg=sg:Select(tp,1,1,nil)
					local tc=tg:GetFirst()
					if sg1:IsContains(tc) and (sg2==nil or not sg2:IsContains(tc) or ce and not Duel.SelectYesNo(tp,ce:GetDescription())) then
						local mat1=Duel.SelectFusionMaterial(tp,tc,mg1,nil,chkf)
						if #mat1<2 then goto cancel end
						tc:SetMaterial(mat1)
						Duel.Remove(mat1,POS_FACEUP,REASON_EFFECT+REASON_MATERIAL+REASON_FUSION)
						Duel.BreakEffect()
						Duel.SpecialSummon(tc,SUMMON_TYPE_FUSION,tp,tp,false,false,POS_FACEUP)
					elseif ce then
						local mat2=Duel.SelectFusionMaterial(tp,tc,mg2,nil,chkf)
						if #mat2<2 then goto cancel end
						local fop=ce:GetOperation()
						Duel.BreakEffect()
						fop(ce,e,tp,tc,mat2)
					end
					tc:CompleteProcedure()
				end
			end
		end
	end
end
