Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Pay 1000 Life Points to Special Summon 1 level 6 or lower Fusion Monster from your Extra Deck in face-up Attack or Defense Position. That Fusion Monster cannot attack your opponent's Life Points directly, and is returned to your Extra Deck at the end of the turn.
--魔導サイエンティスト
--Magical Scientist
local s,id=GetID()
function s.initial_effect(c)
	--Special summon 1 level 6 or lower fusion monster from extra deck
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCost(Cost.PayLP(1000))
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.filter(c,e,tp)
	return c:IsType(TYPE_FUSION) and c:GetLevel()<=6 and Duel.GetLocationCountFromEx(tp,tp,nil,c)>0 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.IsExistingMatchingCard(s.filter,tp,LOCATION_EXTRA,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_EXTRA,0,1,1,nil,e,tp)
	local tc=g:GetFirst()
	if tc and Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)~=0 then
		--Cannot attack directly
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetDescription(3207)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
		e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE+EFFECT_FLAG_CLIENT_HINT)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1,true)
		--Return it to extra deck during end phase
		local e2=Effect.CreateEffect(e:GetHandler())
		e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e2:SetCode(EVENT_PHASE+PHASE_END)
		e2:SetCountLimit(1)
		e2:SetRange(LOCATION_MZONE)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		e2:SetOperation(s.retop)
		tc:RegisterEffect(e2)
	end
end
function s.retop(e,tp,eg,ep,ev,re,r,rp)
	Duel.SendtoDeck(e:GetHandler(),nil,SEQ_DECKTOP,REASON_EFFECT)
end