Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 card and chain this card to a Trap Card you activated. Whenever that Trap Card is sent to the Graveyard, return it to its owner's hand.
--トラップ・キャプチャー
--Trap Reclamation
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_CHAINING)
	e1:SetCondition(s.condition)
	e1:SetCost(s.cost)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return rp==tp and re:IsHasType(EFFECT_TYPE_ACTIVATE) and re:IsTrapEffect()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if re:GetHandler():IsRelateToEffect(re) then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
		e1:SetCode(EVENT_TO_GRAVE)
		e1:SetOperation(s.thop)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD_EXC_GRAVE)
		re:GetHandler():RegisterEffect(e1)
	end
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsHasEffect(EFFECT_NECRO_VALLEY) then
		Duel.SendtoHand(e:GetHandler(),tp,REASON_EFFECT)
	end
end