--六武式真伝天魔六段衝
local s,id,o=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--special summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetCountLimit(1,id+o)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_REMOVE)
	c:RegisterEffect(e3)
end
s.mentioned_counter={
	[0x3]=true,
}
function s.cfilter(c)
	return c:IsSetCard(0x103d) and c:IsType(TYPE_SYNCHRO) and c:IsFaceup()
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	local ct=Duel.GetCounter(tp,1,0,0x3)
	local rt=3-math.floor(ct/6)
	if rt<=0 then return true end
	local g=Duel.GetMatchingGroup(s.cfilter,tp,LOCATION_MZONE,0,nil)
	return g:GetCount()>0 and g:GetClassCount(Card.GetCode)>=rt
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.TRUE,tp,0,LOCATION_ONFIELD,1,nil) end
	local sg=Duel.GetMatchingGroup(aux.TRUE,tp,0,LOCATION_ONFIELD,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,sg,sg:GetCount(),0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local sg=Duel.GetMatchingGroup(aux.TRUE,tp,0,LOCATION_ONFIELD,nil)
	Duel.Destroy(sg,REASON_EFFECT)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsReason(REASON_EFFECT) and rp==1-tp and c:IsPreviousControler(tp)
		and c:IsPreviousLocation(LOCATION_ONFIELD) and c:IsPreviousPosition(POS_FACEDOWN) and re and re:IsActivated()
end
function s.spfilter(c,e,tp)
	return (c:IsSetCard(0x103d) or c:IsSetCard(0x20) and c:IsType(TYPE_EFFECT))
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
		and (c:IsLocation(LOCATION_DECK) and Duel.GetMZoneCount(tp)>0
			or c:IsLocation(LOCATION_EXTRA) and Duel.GetLocationCountFromEx(tp,tp,nil,c)>0)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_DECK+LOCATION_EXTRA,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_DECK+LOCATION_EXTRA)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_DECK+LOCATION_EXTRA,0,1,1,nil,e,tp)
	if g:GetCount()>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end
