White
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by banishing 1 DARK monster from your GY. You can only Special Summon "White Dragon Wyverburster" once per turn this way. If this card is sent from the field to the GY: You can add 1 "Black Dragon Collapserpent" from your Deck to your hand.
local CARD_ID_0 = 61901281 --Black Dragon Collapserpent

local CARD_ID_0 = 61901281 --Black Dragon Collapserpent
local s, id, o = GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e1)
	--special summon
	local e2 = Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_SPSUMMON_PROC)
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e2:SetRange(LOCATION_HAND)
	e2:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--search
	local e3 = Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id, 0))
	e3:SetCategory(CATEGORY_TOHAND + CATEGORY_SEARCH)
	e3:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
	e3:SetProperty(EFFECT_FLAG_DAMAGE_STEP + EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_TO_GRAVE)
	e3:SetCondition(s.condition)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
function s.spfilter(c)
	return c:IsAttribute(ATTRIBUTE_DARK) and c:IsAbleToRemoveAsCost()
end
function s.spcon(e, c)
	if c == nil then
		return true
	end
	local tp = c:GetControler()
	return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and Duel.IsExistingMatchingCard(s.spfilter, tp, LOCATION_GRAVE, 0, 1, nil)
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk, c)
	local g = Duel.GetMatchingGroup(s.spfilter, tp, LOCATION_GRAVE, 0, nil)
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_REMOVE)
	local tc = g:SelectUnselect(nil, tp, false, true, 1, 1)
	if tc then
		e:SetLabelObject(tc)
		return true
	else
		return false
	end
end
function s.spop(e, tp, eg, ep, ev, re, r, rp, c)
	local g = e:GetLabelObject()
	Duel.Remove(g, POS_FACEUP, REASON_SPSUMMON)
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.IsExistingMatchingCard(s.filter, tp, LOCATION_DECK, 0, 1, nil)
	end
	Duel.SetOperationInfo(0, CATEGORY_TOHAND, nil, 1, tp, LOCATION_DECK)
end
function s.filter(c)
	return c:IsCode(CARD_ID_0) and c:IsAbleToHand()
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_ATOHAND)
	local g = Duel.SelectMatchingCard(tp, s.filter, tp, LOCATION_DECK, 0, 1, 1, nil)
	if g:GetCount() > 0 then
		Duel.SendtoHand(g, nil, REASON_EFFECT)
		Duel.ConfirmCards(1 - tp, g)
	end
end


White
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by banishing 1 DARK monster from your GY. You can only Special Summon "White Dragon Wyverburster" once per turn this way. If this card is sent from the field to the GY: You can add 1 "Black Dragon Collapserpent" from your Deck to your hand.
-- White
local CARD_ID_0 = 61901281 --Black Dragon Collapserpent
local s, id, o = GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e1)
	--special summon
	local e2 = Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_SPSUMMON_PROC)
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e2:SetRange(LOCATION_HAND)
	e2:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--search
	local e3 = Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id, 0))
	e3:SetCategory(CATEGORY_TOHAND + CATEGORY_SEARCH)
	e3:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
	e3:SetProperty(EFFECT_FLAG_DAMAGE_STEP + EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_TO_GRAVE)
	e3:SetCondition(s.condition)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
function s.spfilter(c)
	return c:IsAttribute(ATTRIBUTE_DARK) and c:IsAbleToRemoveAsCost()
end
function s.spcon(e, c)
	if c == nil then
		return true
	end
	local tp = c:GetControler()
	return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and Duel.IsExistingMatchingCard(s.spfilter, tp, LOCATION_GRAVE, 0, 1, nil)
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk, c)
	local g = Duel.GetMatchingGroup(s.spfilter, tp, LOCATION_GRAVE, 0, nil)
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_REMOVE)
	local tc = g:SelectUnselect(nil, tp, false, true, 1, 1)
	if tc then
		e:SetLabelObject(tc)
		return true
	else
		return false
	end
end
function s.spop(e, tp, eg, ep, ev, re, r, rp, c)
	local g = e:GetLabelObject()
	Duel.Remove(g, POS_FACEUP, REASON_SPSUMMON)
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.IsExistingMatchingCard(s.filter, tp, LOCATION_DECK, 0, 1, nil)
	end
	Duel.SetOperationInfo(0, CATEGORY_TOHAND, nil, 1, tp, LOCATION_DECK)
end
function s.filter(c)
	return c:IsCode(CARD_ID_0) and c:IsAbleToHand()
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_ATOHAND)
	local g = Duel.SelectMatchingCard(tp, s.filter, tp, LOCATION_DECK, 0, 1, 1, nil)
	if g:GetCount() > 0 then
		Duel.SendtoHand(g, nil, REASON_EFFECT)
		Duel.ConfirmCards(1 - tp, g)
	end
end

