Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Your opponent's monsters cannot target "Nordic" monsters for attacks, except "Tyr of the Nordic Champions". If there is no other "Nordic" monster on the field, destroy this card.
--極星將テュール
--Tyr of the Nordic Champions
local s,id=GetID()
function s.initial_effect(c)
	--self destroy
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_SELF_DESTROY)
	e1:SetCondition(s.descon)
	c:RegisterEffect(e1)
	--battle target
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTargetRange(0,LOCATION_MZONE)
	e2:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e2:SetValue(s.atlimit)
	c:RegisterEffect(e2)
end
s.listed_series={SET_NORDIC}
function s.descon(e)
	return not Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsSetCard,SET_NORDIC),0,LOCATION_MZONE,LOCATION_MZONE,1,e:GetHandler())
end
function s.atlimit(e,c)
	return c:IsFaceup() and c:GetCode()~=id and c:IsSetCard(SET_NORDIC)
end