--created & coded by Lyris, art by Aiggy of DeviantArt
--機氷竜の瀬戸際
local s,id,o=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id+EFFECT_COUNT_CODE_OATH)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_TODECK+CATEGORY_DRAW)
	e1:SetTarget(s.tg)
	e1:SetOperation(s.op)
	c:RegisterEffect(e1)
	if not s.global_check then
		s.global_check=true
		s[0]={}
		s[1]={}
		local race=1
		while race<RACE_ALL do
			s[0][race]=0
			s[1][race]=0
			race=race<<1
		end
		local ge1=Effect.CreateEffect(c)
		ge1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		ge1:SetCode(EVENT_SPSUMMON_SUCCESS)
		ge1:SetOperation(s.rchk)
		Duel.RegisterEffect(ge1,0)
	end
end
function s.cfilter(c,tp,rc)
	return c:IsSummonPlayer(tp) and c:IsRace(rc)
end
function s.rchk(e,tp,eg)
	for p=0,1 do if Duel.GetFlagEffect(p,id)>0 then
		local rc=1
		while rc<RACE_ALL do
			if eg:IsExists(s.cfilter,1,nil,p,rc) then s[p][rc]=s[p][rc]+1 end
			rc=rc<<1
		end
	end end
end
function s.filter(c)
	return c:IsType(TYPE_MONSTER) and c:IsSetCard(0xd76) and (c:IsAbleToHand() or c:IsAbleToDeck())
end
function s.chk(g,tp)
	return aux.dncheck(g) and (#g<3 or Duel.IsPlayerCanDraw(tp,1))
end
function s.tg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	local g=Duel.GetMatchingGroup(aux.AND(s.filter,Card.IsCanBeEffectTarget),tp,LOCATION_GRAVE,0,nil,e):SelectSubGroup(tp,s.chk,false,1,5,tp)
	Duel.SetTargetCard(g)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,#g-1,0,0)
	if #g>2 then Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1) end
end
function s.op(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if Duel.GetFlagEffect(tp,id)==0 then
		local rc=1
		while rc<RACE_ALL do s[tp][rc]=0 rc=rc<<1 end
		Duel.RegisterFlagEffect(tp,id,RESET_PHASE+PHASE_END,0,1)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_LIMIT_SPECIAL_SUMMON_POSITION)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e1:SetTargetRange(1,0)
		e1:SetTarget(s.lim)
		e1:SetReset(RESET_PHASE+PHASE_END)
		Duel.RegisterEffect(e1,tp)
	end
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	if not g then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local sc=g:FilterSelect(tp,aux.AND(Card.IsRelateToEffect,Card.IsAbleToHand),1,1,nil,e):GetFirst()
	if Duel.SendtoHand(sc,nil,REASON_EFFECT)==0 then return end
	Duel.ConfirmCards(1-tp,sc)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetDescription(66)
	e1:SetCode(EFFECT_PUBLIC)
	e1:SetProperty(EFFECT_FLAG_CLIENT_HINT)
	e1:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_PHASE+PHASE_END,2)
	sc:RegisterEffect(e1)
	if Duel.SendtoDeck(g:Filter(Card.IsRelateToEffect,nil,e),nil,SEQ_DECKSHUFFLE,REASON_EFFECT)>1
		and g:FilterCount(Card.IsLocation,nil,LOCATION_DECK+LOCATION_EXTRA)>1 then
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end
function s.lim(e,c,sump,sumtype,sumpos,targetp)
	if sumpos and bit.band(sumpos,POS_FACEDOWN)>0 then return false end
	local tp=sump
	if targetp then tp=targetp end
	return s[tp][c:GetRace()] and s[tp][c:GetRace()]>1
end