Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Inflict 200 damage to your opponent for each Spellcaster monster you control. During your Draw Phase, if this card is in your GY, before you draw: You can give up your normal draw this turn, and if you do, add this card to your hand.
--マジックブラスト
--Magical Blast
local s,id=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.damtg)
	e1:SetOperation(s.damop)
	c:RegisterEffect(e1)
	--salvage
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_PREDRAW)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCondition(s.thcon)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
end
function s.damtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsRace,RACE_SPELLCASTER),tp,LOCATION_MZONE,0,1,nil) end
	local ct=Duel.GetMatchingGroupCount(aux.FaceupFilter(Card.IsRace,RACE_SPELLCASTER),tp,LOCATION_MZONE,0,nil)
	Duel.SetTargetPlayer(1-tp)
	Duel.SetTargetParam(ct*200)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,ct*200)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	local p=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER)
	local ct=Duel.GetMatchingGroupCount(aux.FaceupFilter(Card.IsRace,RACE_SPELLCASTER),tp,LOCATION_MZONE,0,nil)
	Duel.Damage(p,ct*200,REASON_EFFECT)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return tp==Duel.GetTurnPlayer() and Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)>0
		and Duel.GetDrawCount(tp)>0
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToHand() end
	local dt=Duel.GetDrawCount(tp)
	if dt~=0 then
		_replace_count=0
		_replace_max=dt
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e1:SetCode(EFFECT_DRAW_COUNT)
		e1:SetTargetRange(1,0)
		e1:SetReset(RESET_PHASE|PHASE_DRAW)
		e1:SetValue(0)
		Duel.RegisterEffect(e1,tp)
	end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,e:GetHandler(),1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	_replace_count=_replace_count+1
	if _replace_count<=_replace_max and c:IsRelateToEffect(e) then
		Duel.SendtoHand(c,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,c)
	end
end