Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 5 monsters This card's effects can only be applied/resolved while it has Xyz Material. This card cannot be destroyed by card effects. At the end of the Battle Phase, if this card attacked or was attacked: Target 1 card your opponent controls; destroy that target. During each of your End Phases: Detach 1 Xyz Material from this card.
--始祖の守護者ティラス
--Tiras, Keeper of Genesis
local s,id=GetID()
function s.initial_effect(c)
	--xyz summon
	Xyz.AddProcedure(c,nil,5,2)
	c:EnableReviveLimit()
	--indestructable by effect
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e1:SetCondition(s.incon)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--destroy
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCode(EVENT_PHASE|PHASE_BATTLE)
	e2:SetCountLimit(1)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCondition(s.descon)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
	--remove material
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_PHASE+PHASE_END)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1)
	e3:SetCondition(s.rmcon)
	e3:SetOperation(s.rmop)
	c:RegisterEffect(e3)
end
function s.incon(e)
	return e:GetHandler():GetOverlayCount()>0
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetBattledGroupCount()>0
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:GetControler()~=tp and chkc:IsOnField() end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,aux.TRUE,tp,0,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():GetOverlayCount()==0 then return end
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) and tc:IsControler(1-tp) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end
function s.rmcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(tp)
end
function s.rmop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:GetOverlayCount()>0 then
		c:RemoveOverlayCard(tp,1,1,REASON_EFFECT)
	end
end