--created by Swag, coded by Lyris
local s,id=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCategory(CATEGORY_TOGRAVE+CATEGORY_TODECK)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,id+100)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e2:SetCondition(s.condition)
	e2:SetCategory(CATEGORY_DECKDES)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
end
function s.cfilter(c)
	return c:IsType(TYPE_MONSTER) and c:IsSetCard(0xd78) and c:IsDiscardable()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return c:IsDiscardable() and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,c) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DISCARD)
	Duel.SendtoGrave(Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_HAND,0,1,1,c)+c,REASON_COST+REASON_DISCARD)
end
function s.filter(c,e)
	return c:IsFaceup() and c:IsRace(RACE_ZOMBIE) and c:IsType(TYPE_MONSTER) and c:IsCanBeEffectTarget(e)
end
function s.check(g)
	return #g>1 and g:IsExists(Card.IsAbleToDeck,#g-1,nil) or #g==1
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_REMOVED) and chkc:IsControler(tp) and s.filter(chkc,e) end
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_REMOVED,0,nil,e)
	if chk==0 then
		local res=g:CheckSubGroup(s.check,1,5)
		return res
	end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local rg=g:SelectSubGroup(tp,s.check,false,1,5)
	Duel.SetTargetCard(rg)
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,rg,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,rg,#rg-1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS):Filter(Card.IsRelateToEffect,nil,e)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local dg=g:Select(tp,1,1,nil)
	if Duel.SendtoGrave(dg,REASON_EFFECT+REASON_RETURN)>0 then Duel.SendtoDeck(g-dg,nil,2,REASON_EFFECT) end
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsReason(REASON_EFFECT) and re and re:GetHandler():IsSetCard(0xd78)
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeck(tp,1) end
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	if not Duel.IsPlayerCanDiscardDeck(tp,1) then return end
	local g=Duel.GetDecktopGroup(tp,3)
	Duel.ConfirmCards(tp,g)
	if Duel.SelectYesNo(tp,1191) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
		local tc=g:Select(tp,1,1,nil):GetFirst()
		if tc and tc:IsAbleToGrave() then
			Duel.SendtoGrave(tc,REASON_EFFECT)
			Duel.BreakEffect()
		end
	end
	Duel.ShuffleDeck(tp)
end