--クリムゾン・ヘルガイア
--Crimson Gaia
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Add to the hand 1 "Red Dragon Archfiend" or 1 card that lists it from the Deck or GY
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1,id)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
	--Change all monsters the opponent controls to face-down
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_POSITION)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_ATTACK_ANNOUNCE)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetCondition(s.poscond)
	e3:SetTarget(s.postg)
	e3:SetOperation(s.posop)
	c:RegisterEffect(e3)
	--Special Summon 1 "Red Dragon Archfiend" from your GY.
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,2))
	e4:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e4:SetCode(EVENT_DESTROYED)
	e4:SetRange(LOCATION_SZONE)
	e4:SetCountLimit(1,{id,2})
	e4:SetCondition(s.spcond)
	e4:SetTarget(s.sptg)
	e4:SetOperation(s.spop)
	c:RegisterEffect(e4)
end
s.listed_names={CARD_RED_DRAGON_ARCHFIEND,id}
function s.thfilter(c)
	return (c:IsCode(CARD_RED_DRAGON_ARCHFIEND) or c:ListsCode(CARD_RED_DRAGON_ARCHFIEND))
		and not c:IsCode(id) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK|LOCATION_GRAVE,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK|LOCATION_GRAVE)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.thfilter),tp,LOCATION_DECK|LOCATION_GRAVE,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function s.poscond(e,tp,eg,ep,ev,re,r,rp)
	local at=Duel.GetAttacker()
	return at:IsControler(tp) and at:IsCode(CARD_RED_DRAGON_ARCHFIEND)
end
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsCanTurnSet,tp,0,LOCATION_MZONE,1,nil) end
	local g=Duel.GetMatchingGroup(Card.IsCanTurnSet,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,#g,0,0)
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsCanTurnSet,tp,0,LOCATION_MZONE,nil)
	if #g>0 then
		Duel.ChangePosition(g,POS_FACEDOWN_DEFENSE)
	end
end
function s.cfilter(c)
	return c:IsReason(REASON_BATTLE|REASON_EFFECT) and c:IsPreviousLocation(LOCATION_MZONE)
end
function s.spcond(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil)
end
function s.spfilter(c,e,tp)
	return c:IsCode(CARD_RED_DRAGON_ARCHFIEND) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end