Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Activate this card by discarding 1 card; Special Summon as many copies of "Harpie Lady" as possible from your Graveyard. When this face-up card leaves the field, destroy those monsters.
--ヒステリック・パーティー
--Hysteric Party
local s,id=GetID()
function s.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:SetHintTiming(0,TIMING_END_PHASE)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	--Destroy
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e2:SetCode(EVENT_LEAVE_FIELD)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
end
s.listed_names={CARD_HARPIE_LADY}
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD)
end
function s.filter(c,e,tp)
	return c:IsCode(CARD_HARPIE_LADY) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	local tg=Duel.GetMatchingGroup(s.filter,tp,LOCATION_GRAVE,0,nil,e,tp)
	if ft<=0 or #tg==0 then return end
	if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then ft=1 end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=tg:Select(tp,ft,ft,nil)
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP)
		c:SetCardTarget(tc)
	end
	Duel.SpecialSummonComplete()
end
function s.desfilter(c,rc)
	return rc:IsHasCardTarget(c)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.desfilter,tp,LOCATION_MZONE,LOCATION_MZONE,nil,e:GetHandler())
	Duel.Destroy(g,REASON_EFFECT)
end