Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Activate 1 of the following effects. ● Send 1 Link Monster your opponent controls to the GY. ● Banish 7 "World Legacy" cards from your GY; add 1 Cyberse monster from your Deck to your hand. You can only activate 1 "World Legacy Bestowal" per turn.
--星遺物の選託
--World Legacy Bestowal
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	c:RegisterEffect(e1)
end
s.listed_series={SET_WORLD_LEGACY}
function s.cfilter(c)
	return c:IsSetCard(SET_WORLD_LEGACY) and c:IsAbleToRemoveAsCost()
end
function s.thfilter(c)
	return c:IsRace(RACE_CYBERSE) and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local b1=Duel.IsExistingMatchingCard(Card.IsType,tp,0,LOCATION_MZONE,1,nil,TYPE_LINK)
	local b2=Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_GRAVE,0,7,nil) and Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK,0,1,nil)
	if chk==0 then return b1 or b2 end
	local op=0
	if b1 and b2 then
		op=Duel.SelectOption(tp,aux.Stringid(id,0),aux.Stringid(id,1))
	elseif b1 then
		op=Duel.SelectOption(tp,aux.Stringid(id,0))
	else 
		op=Duel.SelectOption(tp,aux.Stringid(id,1))+1 
	end
	if op==0 then
		e:SetCategory(CATEGORY_TOGRAVE)
		e:SetOperation(s.gyop)
		Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,nil,1,1-tp,LOCATION_MZONE)
	else
		e:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
		e:SetOperation(s.thop)
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
		local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_GRAVE,0,7,7,nil)
		Duel.Remove(g,POS_FACEUP,REASON_COST)
		Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
	end
end
function s.gyop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,Card.IsType,tp,0,LOCATION_MZONE,1,1,nil,TYPE_LINK)
	if #g>0 then
		Duel.SendtoGrave(g,REASON_EFFECT)
	end
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end