--Darkness Swamp Mudragon
local s,id,o=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	aux.AddOrigBigbangType(c)
	aux.AddBigbangProc(c,Card.IsNeutral,1,1,aux.NOT(Card.IsNeutral),1)
	--This card can be used as a substitute for any 1 Fusion Material whose name is specifically listed on the Fusion Monster Card, but the other Fusion Material(s) must be correct.
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_FUSION_SUBSTITUTE)
	e1:SetCondition(s.subcon)
	c:RegisterEffect(e1)
	--If this card is Bigbang Summoned: You can add 1 "Polymerization" from your Deck or GY to your hand.
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1,{id,0})
	e1:SetCondition(s.thcon)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
end
function s.subcon(e)
	return e:GetHandler():IsLocation(LOCATION_HAND+LOCATION_MZONE+LOCATION_GRAVE)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsSummonType(SUMMON_TYPE_BIGBANG)
end
function s.thfilter(c)
	return c:IsCode(24094653) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK+LOCATION_GRAVE,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK+LOCATION_GRAVE)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.thfilter),tp,LOCATION_DECK+LOCATION_GRAVE,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end