--D－フォーメーション
--D - Formation
local s,id=GetID()
function s.initial_effect(c)
	c:EnableCounterPermit(0x1c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--counter
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetCondition(s.ctcon)
	e2:SetOperation(s.ctop)
	c:RegisterEffect(e2)
	--search
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCode(EVENT_SUMMON_SUCCESS)
	e3:SetCondition(s.thcon)
	e3:SetCost(s.thcost)
	e3:SetTarget(s.thtg)
	e3:SetOperation(s.thop)
	c:RegisterEffect(e3)
	local e4=e3:Clone()
	e4:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e4)
end
s.counter_place_list={0x1c}
function s.ctfilter(c,tp)
	return c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousSetCard(SET_DESTINY_HERO)
end
function s.ctcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.ctfilter,1,nil,tp)
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():AddCounter(0x1c,1)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	local ph=Duel.GetCurrentPhase()
	return Duel.IsTurnPlayer(tp) and (Duel.IsMainPhase())
end
function s.thcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToGraveAsCost() and e:GetHandler():GetCounter(0x1c)>=2 end
	Duel.SendtoGrave(e:GetHandler(),REASON_COST)
end
function s.filter1(c,e,tp)
	return c:IsFaceup() and (not e or c:IsRelateToEffect(e))
		and Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_DECK|LOCATION_GRAVE,0,1,nil,c:GetCode())
end
function s.filter2(c,code)
	return c:IsCode(code) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return eg:IsExists(s.filter1,1,nil,nil,tp) end
	Duel.SetTargetCard(eg)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK|LOCATION_GRAVE)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local g=eg:Filter(s.filter1,nil,e,tp)
	if #g==0 then return end
	if #g>1 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
		g=g:Select(tp,1,1,nil)
	end
	local tc=g:GetFirst()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local ag=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.filter2),tp,LOCATION_DECK|LOCATION_GRAVE,0,1,2,nil,tc:GetCode())
	Duel.SendtoHand(ag,nil,REASON_EFFECT)
	Duel.ConfirmCards(1-tp,ag)
end