Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Special Summoned. You can Tribute 5 monsters to Tribute Summon (but not Set) this card. This card's ATK/DEF become the combined original ATK/DEF of the Tributed monsters. If this card Summoned this way destroys a DARK Fiend monster owned by your opponent, you win the Duel at the end of the Damage Step.
--守護神エクゾディア
--Exodia, the Legendary Defender
--Scripted by AlphaKretin
local s,id=GetID()
function s.initial_effect(c)
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	c:RegisterEffect(e1)
	--win
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetProperty(EFFECT_FLAG_UNCOPYABLE+EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_BATTLE_DESTROYED)
	e2:SetRange(LOCATION_MZONE)
	e2:SetOperation(s.winop)
	c:RegisterEffect(e2)
	--summon with 5 tribute
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetCode(EFFECT_SUMMON_PROC)
	e3:SetCondition(s.ttcon)
	e3:SetOperation(s.ttop)
	e3:SetValue(SUMMON_TYPE_TRIBUTE+1)
	c:RegisterEffect(e3)
	--tribute check
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_SINGLE)
	e4:SetCode(EFFECT_MATERIAL_CHECK)
	e4:SetValue(s.valcheck)
	c:RegisterEffect(e4)
	--give atk/def effect only when summonned
	local e5=Effect.CreateEffect(c)
	e5:SetType(EFFECT_TYPE_SINGLE)
	e5:SetCode(EFFECT_SUMMON_COST)
	e5:SetOperation(s.facechk)
	e5:SetLabelObject(e4)
	c:RegisterEffect(e5)
end
function s.winop(e,tp,eg,ep,ev,re,r,rp)
	local des=eg:GetFirst()
	local rc=des:GetReasonCard()
	if (des:GetPreviousRaceOnField()&RACE_FIEND==RACE_FIEND and des:GetPreviousAttributeOnField()&ATTRIBUTE_DARK==ATTRIBUTE_DARK
		and des:GetOwner()==(1-tp) and rc:IsRelateToBattle() and rc==e:GetHandler() and rc:GetSummonType()==SUMMON_TYPE_TRIBUTE+1)
		then
		Duel.Win(tp,WIN_REASON_EXODIA_DEFENDER) end
end
function s.ttcon(e,c,minc)
	if c==nil then return true end
	return minc<=5 and Duel.CheckTribute(c,5)
end
function s.ttop(e,tp,eg,ep,ev,re,r,rp,c)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RELEASE)
	local g=Duel.SelectTribute(tp,c,5,5)
	c:SetMaterial(g)
	Duel.Release(g, REASON_SUMMON+REASON_MATERIAL)
end
function s.valcheck(e,c)
	local g=c:GetMaterial()
	local atk=0
	local def=0
	for tc in aux.Next(g) do
		local catk=tc:GetTextAttack()
		atk=atk+(catk>=0 and catk or 0)
		local cdef=tc:GetTextDefense()
		def=def+(cdef>=0 and cdef or 0)
	end
	if e:GetLabel()==1 then
		e:SetLabel(0)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK)
		e1:SetValue(atk)
		e1:SetReset(RESET_EVENT|(RESETS_STANDARD_DISABLE&~RESET_TOFIELD))
		c:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_SET_DEFENSE)
		e2:SetValue(def)
		c:RegisterEffect(e2)
	end
end
function s.facechk(e,tp,eg,ep,ev,re,r,rp)
	e:GetLabelObject():SetLabel(1)
end