Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
FLIP: Apply these effects (simultaneously). ● You can destroy 1 card on the field. ● Send the top 3 cards of your Deck to the GY.
--ライトロード・ハンター ライコウ
--Ryko, Lightsworn Hunter
local s,id=GetID()
function s.initial_effect(c)
	--flip
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DECKDES+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_FLIP)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_DECKDES,nil,0,tp,3)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetFieldGroup(tp,LOCATION_ONFIELD,LOCATION_ONFIELD)
	if #g>0 and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
		local sg=g:Select(tp,1,1,nil)
		Duel.HintSelection(sg)
		Duel.Destroy(sg,REASON_EFFECT)
	end
	Duel.DiscardDeck(tp,3,REASON_EFFECT)
end