Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
After you Normal Summon this card, you can Normal Summon 1 "Ritual Beast" monster during your Main Phase this turn, in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) You can only Special Summon "Ritual Beast Tamer Elder(s)" once per turn.
--霊獣使いの長老
--Ritual Beast Tamer Elder
local s,id=GetID()
function s.initial_effect(c)
	c:SetSPSummonOnce(id)
	--extra summon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetOperation(s.sumop)
	c:RegisterEffect(e1)
end
s.listed_series={SET_RITUAL_BEAST}
function s.sumop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetFlagEffect(tp,id)~=0 then return end
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetTargetRange(LOCATION_HAND|LOCATION_MZONE,0)
	e1:SetCode(EFFECT_EXTRA_SUMMON_COUNT)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_RITUAL_BEAST))
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	Duel.RegisterFlagEffect(tp,id,RESET_PHASE|PHASE_END,0,1)
end