Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 "Elemental HERO" monster + 1 WIND monster Must be Fusion Summoned and cannot be Special Summoned by other ways. If this card is Fusion Summoned: Halve the ATK and DEF of all face-up monsters your opponent currently controls.
--E・HERO Great TORNADO
--Elemental HERO Great Tornado
local s,id=GetID()
function s.initial_effect(c)
	--fusion material
	c:EnableReviveLimit()
	Fusion.AddProcMix(c,true,true,aux.FilterBoolFunctionEx(Card.IsSetCard,SET_ELEMENTAL_HERO),aux.FilterBoolFunctionEx(Card.IsAttribute,ATTRIBUTE_WIND))
	--atk up
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	e2:SetCondition(s.atkcon)
	e2:SetOperation(s.atkop)
	c:RegisterEffect(e2)
	--spsummon condition
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e3:SetCode(EFFECT_SPSUMMON_CONDITION)
	e3:SetValue(aux.fuslimit)
	c:RegisterEffect(e3)
end
s.listed_series={SET_ELEMENTAL_HERO}
s.material_setcode={SET_HERO,SET_ELEMENTAL_HERO}
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsFusionSummoned()
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tg=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	local tc=tg:GetFirst()
	for tc in aux.Next(tg) do
		local atk=tc:GetAttack()
		local def=tc:GetDefense()
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetValue(atk/2)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		e2:SetValue(def/2)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e2)
	end
end