Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 "Aesir" or "Nordic" monster you control; its ATK/DEF become double its original ATK/DEF, until the end of this turn, but it cannot attack your opponent directly this turn.
--極星宝メギンギョルズ
--Nordic Relic Megingjord
local s,id=GetID()
function s.initial_effect(c)
	--Targeted "Aesir" or "Nordic" monster has its ATK/DEF doubled, but cannot attack directly
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(TIMING_DAMAGE_STEP)
	e1:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_NORDIC,SET_AESIR}
function s.filter(c)
	return c:IsFaceup() and c:IsSetCard({SET_NORDIC,SET_AESIR})
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	local exc=nil
	if Duel.IsPhase(PHASE_DAMAGE) and Duel.GetAttackTarget()==nil then exc=Duel.GetAttacker() end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,exc) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,exc)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() then
		--ATK/DEF becomes doubled of original ATK/DEF
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(tc:GetBaseAttack()*2)
		tc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(e:GetHandler())
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		e2:SetValue(tc:GetBaseDefense()*2)
		tc:RegisterEffect(e2)
		--Cannot attack directly this turn
		local e3=Effect.CreateEffect(e:GetHandler())
		e3:SetDescription(3207)
		e3:SetProperty(EFFECT_FLAG_CLIENT_HINT)
		e3:SetType(EFFECT_TYPE_SINGLE)
		e3:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
		e3:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e3)
	end
end