Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
While you control a Continuous Spell/Trap, this card cannot be destroyed by battle or card effects. During your opponent's turn (Quick Effect): You can send 1 face-up Continuous Spell/Trap you control to the GY; draw 1 card. You can only use this effect of "Magical Broker" once per turn.
--魔導闇商人
--Magical Broker
--Scripted by Hel
local s,id=GetID()
function s.initial_effect(c)
	--Cannot be destroyed by battle or card effects
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e1:SetCondition(s.incon)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	c:RegisterEffect(e2)
	--Send 1 face-up Continuous Spell/Trap to the GY to draw 1 card
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_DRAW)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_MZONE)
	e3:SetHintTiming(0,TIMING_END_PHASE)
	e3:SetCountLimit(1,id)
	e3:SetCondition(s.drcon)
	e3:SetCost(s.drcost)
	e3:SetTarget(s.drtg)
	e3:SetOperation(s.drop)
	c:RegisterEffect(e3)
end
function s.indesfil(c)
	return c:IsFaceup() and c:IsType(TYPE_CONTINUOUS) and c:IsSpellTrap()
end
function s.incon(e)
	return Duel.IsExistingMatchingCard(s.indesfil,e:GetHandlerPlayer(),LOCATION_ONFIELD,0,1,nil)
end
function s.drcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(1-tp)
end
function s.cfilter(c)
	return c:IsFaceup() and c:IsType(TYPE_CONTINUOUS) and c:IsSpellTrap() and c:IsAbleToGraveAsCost()
end
function s.drcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_ONFIELD,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_ONFIELD,0,1,1,nil)
	Duel.SendtoGrave(g,REASON_COST)
end
function s.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end