Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All "Metalfoes" monsters you control gain 300 ATK and DEF. While a "Metalfoes" card is in your Pendulum Zone, "Metalfoes" monsters you control, except Effect Monsters, are unaffected by your opponent's card effects.
--メタモルF
--Metamorformation
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--atk up
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetRange(LOCATION_FZONE)
	e2:SetTargetRange(LOCATION_MZONE,0)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_METALFOES))
	e2:SetValue(300)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EFFECT_UPDATE_DEFENSE)
	c:RegisterEffect(e3)
	--immune effect
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD)
	e4:SetCode(EFFECT_IMMUNE_EFFECT)
	e4:SetRange(LOCATION_FZONE)
	e4:SetTargetRange(LOCATION_MZONE,0)
	e4:SetCondition(s.immcon)
	e4:SetTarget(s.etarget)
	e4:SetValue(s.efilter)
	c:RegisterEffect(e4)
end
s.listed_series={SET_METALFOES}
function s.immcon(e)
	return Duel.IsExistingMatchingCard(Card.IsSetCard,e:GetHandlerPlayer(),LOCATION_PZONE,0,1,nil,SET_METALFOES)
end
function s.etarget(e,c)
	return c:IsSetCard(SET_METALFOES) and not c:IsType(TYPE_EFFECT)
end
function s.efilter(e,re)
	return re:GetOwnerPlayer()~=e:GetHandlerPlayer()
end