Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 "Superheavy Samurai" monster Cannot be used as Link Material. While you have no Spells/Traps in your GY, you take no battle damage from attacks involving this card. If you have no Spells/Traps in your GY: You can discard 1 monster, then target 1 "Superheavy Samurai" monster in your GY; Special Summon it to your zone this card points to, in Defense Position. You can only use this effect of "Superheavy Samurai Scarecrow" once per turn.
--超重武者カカ-C
--Superheavy Samurai Scarecrow
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	Link.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsSetCard,SET_SUPERHEAVY_SAMURAI),1,1)
	--cannot link material
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_CANNOT_BE_LINK_MATERIAL)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--battle dam 0
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_AVOID_BATTLE_DAMAGE)
	e2:SetCondition(s.condition)
	e2:SetValue(1)
	c:RegisterEffect(e2)
	--spsummon
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,id)
	e3:SetCondition(s.condition)
	e3:SetCost(s.cost)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
s.listed_series={SET_SUPERHEAVY_SAMURAI}
function s.filter(c)
	return c:IsSpellTrap()
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return not Duel.IsExistingMatchingCard(s.filter,e:GetHandlerPlayer(),LOCATION_GRAVE,0,1,nil)
end
function s.cfilter(c)
	return c:IsMonster() and c:IsDiscardable()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,s.cfilter,1,1,REASON_COST|REASON_DISCARD)
end
function s.sfilter(c,e,tp,zone)
	return c:IsSetCard(SET_SUPERHEAVY_SAMURAI) and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE,tp,zone)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local zone=e:GetHandler():GetLinkedZone(tp)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.sfilter(chkc,e,tp,zone) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.sfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp,zone) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.sfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp,zone)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local zone=e:GetHandler():GetLinkedZone(tp)
	if zone==0 then return end
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and zone~=0 then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP_DEFENSE,zone)
	end
end