Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
"Elemental HERO Avian" + "Elemental HERO Burstinatrix" + "Elemental HERO Clayman" + "Elemental HERO Bubbleman" Must be Fusion Summoned. While face-up on the field, this card is also WIND, WATER, FIRE, and EARTH Attribute. When this card is Fusion Summoned: Shuffle all banished cards into the Deck(s). Gains 300 ATK for each monster your opponent controls with the same Attribute as this card.
--E・HERO エリクシーラー
--Elemental HERO Electrum
local s,id=GetID()
function s.initial_effect(c)
	--fusion material
	c:EnableReviveLimit()
	Fusion.AddProcMix(c,true,true,21844576,58932615,84327329,79979666)
	--spsummon condition
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e2:SetCode(EFFECT_SPSUMMON_CONDITION)
	e2:SetValue(aux.fuslimit)
	c:RegisterEffect(e2)
	--attribute
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EFFECT_ADD_ATTRIBUTE)
	e3:SetValue(0xf)
	c:RegisterEffect(e3)
	--return
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_TODECK)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e4:SetCode(EVENT_SPSUMMON_SUCCESS)
	e4:SetCondition(s.retcon)
	e4:SetTarget(s.rettg)
	e4:SetOperation(s.retop)
	c:RegisterEffect(e4)
	--atk
	local e5=Effect.CreateEffect(c)
	e5:SetType(EFFECT_TYPE_SINGLE)
	e5:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e5:SetRange(LOCATION_MZONE)
	e5:SetCode(EFFECT_UPDATE_ATTACK)
	e5:SetValue(s.val)
	c:RegisterEffect(e5)
end
s.material_setcode={SET_HERO,SET_ELEMENTAL_HERO}
function s.retcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsFusionSummoned()
end
function s.rettg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(Card.IsAbleToDeck,tp,LOCATION_REMOVED,LOCATION_REMOVED,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,#g,0,0)
end
function s.retop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(nil,tp,LOCATION_REMOVED,LOCATION_REMOVED,nil)
	Duel.SendtoDeck(g,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
end
function s.val(e,c)
	return Duel.GetMatchingGroupCount(aux.FaceupFilter(Card.IsAttribute,c:GetAttribute()),c:GetControler(),0,LOCATION_MZONE,nil)*300
end