Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Send 1 "Shaddoll" card from your Deck to the GY, then you can change any number of face-down Defense Position "Shaddoll" monsters you control to face-up Defense Position.
--堕ち影の蠢き
--Sinister Shadow Games
local s,id=GetID()
function s.initial_effect(c)
	--Send 1 "Shaddoll" card from deck to GY
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOGRAVE+CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E|TIMING_ATTACK|TIMING_BATTLE_START)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_SHADDOLL}
function s.filter(c)
	return c:IsSetCard(SET_SHADDOLL) and c:IsAbleToGrave()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.posfilter(c)
	return c:IsFacedown() and c:IsSetCard(SET_SHADDOLL)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 and Duel.SendtoGrave(g,REASON_EFFECT)>0 and g:GetFirst():IsLocation(LOCATION_GRAVE) then
		local tg=Duel.GetMatchingGroup(s.posfilter,tp,LOCATION_MZONE,0,nil)
		if #tg>0 and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
			Duel.BreakEffect()
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
			local sg=tg:Select(tp,1,#tg,nil)
			Duel.ChangePosition(sg,POS_FACEUP_DEFENSE)
		end
	end
end