--カードガンナー
function c85087012.initial_effect(c)
	--atkup
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(85087012,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(c85087012.cost)
	e1:SetOperation(c85087012.operation)
	c:RegisterEffect(e1)
	--draw
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(85087012,1))
	e2:SetCategory(CATEGORY_DRAW)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(c85087012.drcon)
	e2:SetTarget(c85087012.drtg)
	e2:SetOperation(c85087012.drop)
	c:RegisterEffect(e2)
end
function c85087012.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeckAsCost(tp,1) end
	local ct={}
	for i=3,1,-1 do
		if Duel.IsPlayerCanDiscardDeckAsCost(tp,i) then
			table.insert(ct,i)
		end
	end
	if #ct==1 then 
		Duel.DiscardDeck(tp,ct[1],REASON_COST)
		e:SetLabel(1)
	else
		Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(85087012,2))
		local ac=Duel.AnnounceNumber(tp,table.unpack(ct))
		Duel.DiscardDeck(tp,ac,REASON_COST)
		e:SetLabel(ac)
	end
end
function c85087012.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsFaceup() and c:IsRelateToEffect(e) then
		local ct=e:GetLabel()
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetReset(RESET_EVENT+0x1ff0000+RESET_PHASE+PHASE_END)
		e1:SetValue(ct*500)
		c:RegisterEffect(e1)
	end
end
function c85087012.drcon(e,tp,eg,ep,ev,re,r,rp)
	return bit.band(r,REASON_DESTROY)~=0 and e:GetHandler():GetPreviousControler()==tp
		and e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function c85087012.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function c85087012.drop(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
