Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When you draw this card: You can reveal this card; Special Summon it from your hand. If this card battles a DARK monster, its ATK is doubled during the Damage Step only. If this card is destroyed by battle or card effect: You can Special Summon 1 "Dark Magician" from your hand, Deck, or Graveyard.
--守護神官マハード
--Palladium Oracle Mahad
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon this card from your hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_DRAW)
	e1:SetRange(LOCATION_HAND)
	e1:SetCost(function(e,tp,eg,ep,ev,re,r,rp,chk) if chk==0 then return not e:GetHandler():IsPublic() end end)
	e1:SetTarget(s.selfsptg)
	e1:SetOperation(s.selfspop)
	c:RegisterEffect(e1)
	--If this card battles a DARK monster, its ATK is doubled during the Damage Step only
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetCode(EFFECT_SET_ATTACK_FINAL)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCondition(s.atkcon)
	e2:SetValue(function(e,c) return e:GetHandler():GetAttack()*2 end)
	c:RegisterEffect(e2)
	--Special Summon 1 "Dark Magician" from your hand, Deck, or GY
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_DESTROYED)
	e3:SetCondition(function(e,tp,eg,ep,ev,re,r,rp) return r&(REASON_BATTLE|REASON_EFFECT)>0 end)
	e3:SetTarget(s.dmsptg)
	e3:SetOperation(s.dmspop)
	c:RegisterEffect(e3)
end
s.listed_names={CARD_DARK_MAGICIAN}
function s.selfsptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,tp,0)
end
function s.selfspop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
end
function s.atkcon(e)
	if not (Duel.IsPhase(PHASE_DAMAGE) or Duel.IsPhase(PHASE_DAMAGE_CAL)) then return false end
	local bc=e:GetHandler():GetBattleTarget()
	return bc and bc:IsAttribute(ATTRIBUTE_DARK) and bc:IsFaceup()
end
function s.dmspfilter(c,e,tp)
	return c:IsCode(CARD_DARK_MAGICIAN) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.dmsptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.dmspfilter,tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE)
end
function s.dmspop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.dmspfilter),tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end