local cm,m=GetID()
cm.name="羊界的晚安"
function cm.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DECKDES+CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCondition(cm.condition)
	e1:SetTarget(cm.target)
	e1:SetOperation(cm.activate)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e2)
end
--Activate
function cm.confilter(c,tp)
	return c:GetSummonPlayer()==tp
end
function cm.exfilter(c)
	return c:IsType(TYPE_MAXIMUM+TYPE_NORMAL) and c:IsRace(RACE_BEAST) and c:IsLocation(LOCATION_GRAVE)
end
function cm.posfilter(c,e,tp)
	return c:IsFaceup() and RD.IsCanChangePosition(c,e,tp,REASON_EFFECT) and c:IsCanTurnSet()
end
function cm.condition(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(cm.confilter,1,nil,1-tp)
end
function cm.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chk==0 then return Duel.IsPlayerCanDiscardDeck(tp,3) end
	Duel.SetOperationInfo(0,CATEGORY_DECKDES,nil,0,tp,3)
end
function cm.activate(e,tp,eg,ep,ev,re,r,rp)
	if RD.SendDeckTopToGraveAndExists(tp,3) then
		local ct=Duel.GetOperatedGroup():FilterCount(cm.exfilter,nil)
		if ct==0 then return end
		local filter=RD.Filter(cm.posfilter,e,tp)
		RD.CanSelectAndDoAction(aux.Stringid(m,1),HINTMSG_POSCHANGE,filter,tp,0,LOCATION_MZONE,1,ct,nil,function(g)
			RD.ChangePosition(g,e,tp,REASON_EFFECT,POS_FACEDOWN_DEFENSE)
		end)
	end
end