--Scrap Gryphon
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	aux.AddOrigBigbangType(c)
	aux.AddBigbangProc(c,Card.IsPositive,1,Card.IsNegative,1)
	--If this card is Bigbang Summoned: You can destroy 1 card you control
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	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.descon)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
	--If a card on the field is destroyed by a card effect: You can draw 1 card.
	local e2=Effect.CreateEffect(c)
	e2:SetCategory(CATEGORY_DRAW)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_DELAY)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.drawcon)
	e2:SetTarget(s.drawtg)
	e2:SetOperation(s.drawop)
	c:RegisterEffect(e2)
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsSummonType(SUMMON_TYPE_BIGBANG)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return true end
	if chk==0 then return true end
	local g=Duel.GetFieldGroup(tp,LOCATION_ONFIELD,0)
	if #g>0 then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
	end
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	c=e:GetHandler()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local d=Duel.SelectMatchingCard(tp,nil,tp,LOCATION_ONFIELD,0,1,1,nil)
	if #d>0 then
		Duel.Destroy(d,REASON_EFFECT)
		--then, if this card was Bigbang Summoned using a "Scrap" monster, you can destroy 1 card on the field.
		local g2=Duel.GetFieldGroup(tp,LOCATION_ONFIELD,LOCATION_ONFIELD)
		if c:GetMaterial():FilterCount(aux.FilterEqualFunction(Card.IsSetCard,true,0x24),nil)>0 and #g2>0 and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
			Duel.BreakEffect()
			local d2=Duel.SelectMatchingCard(tp,nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
			if #d2>0 then
				Duel.Destroy(d2,REASON_EFFECT)
			end
		end
	end
end
function s.cfilter(c)
	return c:IsReason(REASON_EFFECT) and c:IsPreviousLocation(LOCATION_ONFIELD)
end
function s.drawcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil)
end
function s.drawtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.drawop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end