Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If all monsters you control are "Exosister" monsters (min. 1): Pay 800 LP, then target 1 card your opponent controls or in their GY; banish it, then you can apply 1 of the following effects. ● Immediately after this effect resolves, Xyz Summon 1 "Exosister" Xyz Monster using monsters you control. ● If you Xyz Summoned this turn, banish 1 card your opponent controls. You can only activate 1 "Exosister Returnia" per turn.
--エクソシスター・リタニア
--Exosister Returnia
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Banish
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_REMOVE+CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E|TIMING_MAIN_END)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCondition(s.rmcon)
	e1:SetCost(Cost.PayLP(800))
	e1:SetTarget(s.rmtg)
	e1:SetOperation(s.rmop)
	c:RegisterEffect(e1)
	Duel.AddCustomActivityCounter(id,ACTIVITY_SPSUMMON,function(c) return not c:IsXyzSummoned() end)
end
s.listed_series={SET_EXOSISTER}
function s.rmcon(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetFieldGroup(tp,LOCATION_MZONE,0)
	return #g>0 and g:FilterCount(aux.FaceupFilter(Card.IsSetCard,SET_EXOSISTER),nil)==#g
end
function s.rmtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(1-tp) and chkc:IsLocation(LOCATION_ONFIELD|LOCATION_GRAVE) and chkc:IsAbleToRemove() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD|LOCATION_GRAVE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectTarget(tp,Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD|LOCATION_GRAVE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_REMOVE,g,1,0,0)
end
function s.spfilter(c)
	return c:IsSetCard(SET_EXOSISTER) and c:IsXyzSummonable()
end
function s.rmop(e,tp,eg,ep,ev,re,r,rp,chk)
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) or Duel.Remove(tc,POS_FACEUP,REASON_EFFECT)<1 then return end
	local xg=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_EXTRA,0,nil)
	local rg=Duel.GetMatchingGroup(Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD,nil)
	local b1=#xg>0
	local b2=#rg>0 and Duel.GetCustomActivityCount(id,tp,ACTIVITY_SPSUMMON)>0
	if not (b1 or b2) then return end
	if not Duel.SelectYesNo(tp,aux.Stringid(id,1)) then return end
	local op=Duel.SelectEffect(tp,
		{b1,aux.Stringid(id,2)},
		{b2,aux.Stringid(id,3)})
	if op==1 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=xg:Select(tp,1,1,nil)
		if #g>0 then
			Duel.XyzSummon(tp,g:GetFirst())
		end
	elseif op==2 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
		local g=rg:Select(tp,1,1,nil)
		if #g>0 then
			Duel.HintSelection(g,true)
			Duel.Remove(g,POS_FACEUP,REASON_EFFECT)
		end
	end
end