Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Destroy 2 or more monsters you control, and if you do, draw 1 card for every 2 monsters destroyed. During your opponent's Main Phase, if this card is in your GY: You can target 1 monster you control; destroy it, and if you do, Set this card, but banish it when it leaves the field. You can only use this effect of "High Rate Draw" once per turn.
--ハイレート・ドロー
--High Rate Draw
--Scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Destroy 2+ of your monsters, and if you do, for every 2 destroyed, draw 1
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY+CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	e1:SetHintTiming(0,TIMING_END_PHASE)
	c:RegisterEffect(e1)
	--Set itself from GY
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,2))
	e2:SetCategory(CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetHintTiming(0,TIMING_MAIN_END)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.setcon)
	e2:SetTarget(s.settg)
	e2:SetOperation(s.setop)
	c:RegisterEffect(e2)
end
function s.filter(c,e)
	return c:IsMonster() and c:IsDestructable(e)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_ONFIELD,0,2,nil,e) end
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_ONFIELD,0,nil,e)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,2,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_ONFIELD,0,2,99,nil,e)
	local ct=Duel.Destroy(g,REASON_EFFECT)
	if ct>1 then
		Duel.Draw(tp,math.floor(ct/2),REASON_EFFECT)
	end
end
function s.setcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsMainPhase() and Duel.IsTurnPlayer(1-tp)
end
function s.settg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chkc then return chkc:IsLocation(LOCATION_ONFIELD) and chkc:IsFaceup() and chkc:IsControler(tp) and s.filter(chkc,e) end
	if chk==0 then return e:GetHandler():IsSSetable() and Duel.IsExistingTarget(s.filter,tp,LOCATION_ONFIELD,0,1,nil,e) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_ONFIELD,0,1,1,nil,e)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,e:GetHandler(),1,0,0)
end
function s.setop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) and Duel.Destroy(tc,REASON_EFFECT)>0 then
		local c=e:GetHandler()
		if c:IsRelateToEffect(e) and c:IsSSetable() then
			Duel.SSet(tp,c)
			--Banish it if it leaves the field
			local e1=Effect.CreateEffect(c)
			e1:SetDescription(3300)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_LEAVE_FIELD_REDIRECT)
			e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
			e1:SetReset(RESET_EVENT|RESETS_REDIRECT)
			e1:SetValue(LOCATION_REMOVED)
			c:RegisterEffect(e1)
		end
	end
end