--Dustflaw Offerings
function c89217834.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(c89217834.target)
	e1:SetOperation(c89217834.activate)
	c:RegisterEffect(e1)
	--draw
	local e2=Effect.CreateEffect(c)
	e2:SetCategory(CATEGORY_TODECK+CATEGORY_DRAW)
	e2:SetDescription(aux.Stringid(89217834,1))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,89217834)
	e2:SetTarget(c89217834.tdtg)
	e2:SetOperation(c89217834.tdop)
	c:RegisterEffect(e2)
end
function c89217834.filter(c,e,tp,m,ft)
	if not c:IsSetCard(0xff15) or bit.band(c:GetType(),0x81)~=0x81
		or not c:IsCanBeSpecialSummoned(e,SUMMON_TYPE_RITUAL,tp,false,true) then return false end
	local mg=m:Filter(Card.IsCanBeRitualMaterial,c,c)
	if ft>0 then
		return mg:CheckWithSumGreater(Card.GetRitualLevel,c:GetLevel(),c)
	else
		return mg:IsExists(c89217834.filterF,1,nil,tp,mg,c)
	end
end
function c89217834.filterF(c,tp,mg,rc)
	if c:IsControler(tp) and c:IsLocation(LOCATION_MZONE) then
		Duel.SetSelectedCard(c)
		return mg:CheckWithSumGreater(Card.GetRitualLevel,rc:GetLevel(),rc)
	else return false end
end
function c89217834.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local mg=Duel.GetRitualMaterial(tp)
		local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
		return ft>-1 and Duel.IsExistingMatchingCard(c89217834.filter,tp,LOCATION_HAND,0,1,nil,e,tp,mg,ft)
	end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function c89217834.activate(e,tp,eg,ep,ev,re,r,rp)
	local mg=Duel.GetRitualMaterial(tp)
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local tg=Duel.SelectMatchingCard(tp,c89217834.filter,tp,LOCATION_HAND,0,1,1,nil,e,tp,mg,ft)
	local tc=tg:GetFirst()
	if tc then
		mg=mg:Filter(Card.IsCanBeRitualMaterial,tc,tc)
		local mat=nil
		if ft>0 then
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RELEASE)
			mat=mg:SelectWithSumGreater(tp,Card.GetRitualLevel,tc:GetLevel(),tc)
		else
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RELEASE)
			mat=mg:FilterSelect(tp,c89217834.filterF,1,1,nil,tp,mg,tc)
			Duel.SetSelectedCard(mat)
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RELEASE)
			local mat2=mg:SelectWithSumGreater(tp,Card.GetRitualLevel,tc:GetLevel(),tc)
			mat:Merge(mat2)
		end
		tc:SetMaterial(mat)
		Duel.ReleaseRitualMaterial(mat)
		Duel.BreakEffect()
		Duel.SpecialSummon(tc,SUMMON_TYPE_RITUAL,tp,tp,false,true,POS_FACEUP)
		tc:CompleteProcedure()
	end
end
function c89217834.tdtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToDeck() and Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetOperationInfo(0,CATEGORY_TODECK,e:GetHandler(),1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function c89217834.tdop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and Duel.SendtoDeck(c,nil,0,REASON_EFFECT)~=0 and c:IsLocation(LOCATION_DECK) then
		Duel.ShuffleDeck(tp)
		Duel.BreakEffect()
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end