--究極竜魔導師
local s,id,o=GetID()
function s.initial_effect(c)
	aux.AddMaterialCodeList(c,23995346)
	-- common Ritual‐monster filter: 「カオス」儀式モンスター
	local ritual_filter=function(mc,tc)
		if not mc:IsAllTypes(TYPE_MONSTER|TYPE_RITUAL) then return false end
		return mc:IsFusionSetCard(0xcf)
	end
	Fusion.AddFusionProcedure(c,{
		variants = {
			-- Variant A: 1 × 青眼の究極竜 + 1 × 「カオス」儀式モンスター
			{
				slots = {
					Fusion.Slot.Code(23995346),
					Fusion.Slot.Filter(ritual_filter),
				}
			},
			-- Variant B: 3 × 「ブルーアイズ」モンスター + 1 × 「カオス」儀式モンスター
			{
				slots = {
					Fusion.Slot.Group({
						min=3,
						max=3,
						filter=function(mc,tc) return mc:IsFusionSetCard(0xdd) end,
					}),
					Fusion.Slot.Filter(ritual_filter),
				}
			}
		}
	})
	c:EnableReviveLimit()
	--summon procedure
	local e0=Effect.CreateEffect(c)
	e0:SetType(EFFECT_TYPE_SINGLE)
	e0:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e0:SetCode(EFFECT_SPSUMMON_CONDITION)
	e0:SetValue(aux.fuslimit)
	c:RegisterEffect(e0)
	--negate
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_CHAINING)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCondition(s.discon)
	e2:SetTarget(s.distg)
	e2:SetOperation(s.disop)
	c:RegisterEffect(e2)
	--destroyed
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,2))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_LEAVE_FIELD)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCondition(s.spcon)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
function s.discon(e,tp,eg,ep,ev,re,r,rp)
	return rp==1-tp and not e:GetHandler():IsStatus(STATUS_BATTLE_DESTROYED) and Duel.IsChainNegatable(ev)
		and ((re:IsActiveType(TYPE_MONSTER) and Duel.GetFlagEffect(tp,id)==0)
		or (re:IsActiveType(TYPE_SPELL) and Duel.GetFlagEffect(tp,id+o)==0)
		or (re:IsActiveType(TYPE_TRAP) and Duel.GetFlagEffect(tp,id+o*2)==0))
end
function s.distg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	if re:IsActiveType(TYPE_MONSTER) then
		Duel.RegisterFlagEffect(tp,id,RESET_PHASE+PHASE_END,0,1)
		local e1=Effect.CreateEffect(c)
		e1:SetDescription(aux.Stringid(id,3))
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
		e1:SetReset(RESET_PHASE+PHASE_END)
		e1:SetTargetRange(1,0)
		Duel.RegisterEffect(e1,tp)
	elseif re:IsActiveType(TYPE_SPELL) then
		Duel.RegisterFlagEffect(tp,id+o,RESET_PHASE+PHASE_END,0,1)
		local e1=Effect.CreateEffect(c)
		e1:SetDescription(aux.Stringid(id,4))
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
		e1:SetReset(RESET_PHASE+PHASE_END)
		e1:SetTargetRange(1,0)
	elseif re:IsActiveType(TYPE_TRAP) then
		Duel.RegisterFlagEffect(tp,id+o*2,RESET_PHASE+PHASE_END,0,1)
		local e1=Effect.CreateEffect(c)
		e1:SetDescription(aux.Stringid(id,5))
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
		e1:SetReset(RESET_PHASE+PHASE_END)
		e1:SetTargetRange(1,0)
	end
	if re:GetHandler():IsDestructable() and re:GetHandler():IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,0,0)
	end
end
function s.disop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re) then
		Duel.Destroy(eg,REASON_EFFECT)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPreviousLocation(LOCATION_ONFIELD)
		and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousControler(tp) and c:GetReasonPlayer()==1-tp
end
function s.spfilter(c,e,tp)
	return (c:IsSetCard(0xdd) or c:IsSetCard(0xcf) and c:IsAllTypes(TYPE_MONSTER+TYPE_RITUAL))
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
		and (c:IsLocation(LOCATION_GRAVE) and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
			or c:IsLocation(LOCATION_EXTRA) and Duel.GetLocationCountFromEx(tp,tp,nil,c)>0)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_GRAVE+LOCATION_EXTRA,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE+LOCATION_EXTRA)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.spfilter),tp,LOCATION_GRAVE+LOCATION_EXTRA,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end
