Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 "Dual Avatar" monster in your GY; Special Summon it, then if its original Level is 4 or lower, you can Special Summon 1 "Dual Avatar Spirit Token" (Warrior/LIGHT/Level 2/ATK 0/DEF 0). You can only activate 1 "Dual Avatar Return" per turn.
--双天の再来
--Dual Avatar Return
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
s.listed_series={SET_DUAL_AVATAR}
s.listed_names={TOKEN_DUAL_AVATAR_SPIRIT}
function s.filter(c,e,tp)
	return c:IsSetCard(SET_DUAL_AVATAR) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chck:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.filter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) and Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)>0 then
		if tc:HasLevel() and tc:GetOriginalLevel()<5 and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
			and Duel.IsPlayerCanSpecialSummonMonster(tp,TOKEN_DUAL_AVATAR_SPIRIT,SET_DUAL_AVATAR,TYPES_TOKEN,0,0,2,RACE_WARRIOR,ATTRIBUTE_LIGHT)
			and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then 
			Duel.BreakEffect()
			local token=Duel.CreateToken(tp,TOKEN_DUAL_AVATAR_SPIRIT)
			Duel.SpecialSummon(token,0,tp,tp,false,false,POS_FACEUP)
		end
	end
end