--竜破壊の証
function c6390406.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(c6390406.target)
	e1:SetOperation(c6390406.activate)
	c:RegisterEffect(e1)
end
function c6390406.filter(c)
	return c:IsCode(78193831) and c:IsAbleToHand()
end
function c6390406.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c6390406.filter,tp,LOCATION_DECK+LOCATION_GRAVE,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK+LOCATION_GRAVE)
end
function c6390406.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,c6390406.filter,tp,LOCATION_DECK+LOCATION_GRAVE,0,1,1,nil)
	if g:GetCount()>0 then
		if g:GetFirst():IsHasEffect(EFFECT_NECRO_VALLEY) and Duel.IsChainDisablable(0) then
			Duel.NegateEffect(0)
			return
		end
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
