Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you control 2 or more "Crystal Beast" cards in your Spell & Trap Zone: Your opponent chooses 1 "Crystal Beast" card in your Spell & Trap Zone, you send it to the GY, and if you do, you draw 2 cards.
--レア・ヴァリュー
--Rare Value
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_CRYSTAL_BEAST}
function s.filter(c)
	return c:IsFaceup() and c:IsSetCard(SET_CRYSTAL_BEAST)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_SZONE,0,2,nil)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,2) end
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,2)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_SZONE,0,nil)
	if #g>0 then
		Duel.Hint(HINT_SELECTMSG,1-tp,HINTMSG_TOGRAVE)
		local sg=g:Select(1-tp,1,1,nil)
		Duel.SendtoGrave(sg,REASON_EFFECT)
		if sg:GetFirst():IsLocation(LOCATION_GRAVE) then
			Duel.Draw(tp,2,REASON_EFFECT)
		end
	end
end