I haven't seen any discussion on a list using balustrade spy/under city informer in vintage yet outside of the spoiler thread. I think that there's a lot of potential here so I thought I would start this up.

The idea is to play one of these guys with no land in your deck, you mill your entire library and put 3-4 nacromoebas onto the battlefield. Then cast a Dread Return from your graveyard and win with one of several win conditions.
So far the best viable win conditions are,
Sutured Ghoul + Dragon Breath (two cards, most compact kill)
Laboratory Maniac + Angel of Glory's Rise + Azami, Lady of Scrolls (one more card but does not require attack step and is immune to removal)
Others that work but aren't as good are,
Kiki-jiki +karmic guide+ pestermite (requires attck step, three cards)
Reveilark+mogg fanatic+body double+carrion feeder (four cards, target a player)
The Mimeoplasm + Triskelion/murderous redcap+ sutured ghoul/lord of extinction (targets a player)
Flame-Kin Zealot+2x Bridge from below (requires attack step)
It is also desirable to have Cabal Therapy in your deck in case you draw a combo piece. Bridge From Below is important too in case you need to discard a combo piece and need to keep creatures in play to cast Dread Return.
So far the best shell proposed has been a 0 mana belcher style build that focuses on a turn zero win (although mana severance and playing controll is also an option), for reference here's Lochinvar81's (very old) 0 land Belcher list,
4x Goblin Charbelcher
4x Empty the Warrens
1x Wheel of Fortune
1x Memory Jar
1x Tinker
1x Timetwister
4x Goblin Welder
4x Guttural Response
4x Street Wraith
4x Manamorphose
4x Simian Spirit Guide
4x Elvish Spirit Guide
4x Rite of Flame
4x Tinder Wall
3x Chrome Mox*
1x Channel
1x Mox Emerald
1x Mox Jet
1x Mox Pearl
1x Mox Ruby
1x Mox Sapphire
1x Black Lotus
1x Lotus Petal
1x Lion’s Eye Diamond
1x Mana Crypt
1x Mana Vault
1x Sol Ring
1x Grim Monolith
Sideboard
4x Desperate Ritual
4x Tormod’s Crypt
4x Storm Entity
2x Pyroblast
1x Gaea’s Blessing
Taken from
http://www.themanadrain.com/index.php?topic=37138.0;wap2The obvious evolution would be to remove the unneeded cards and put in the chaff and new cards, creating something like this,
4x undercity informer
4x ballistrade spy1x Wheel of Fortune
1x Memory Jar
1x Tinker
1x Timetwister
4x narcoemoba4x Guttural Response
1x dread return
1x bridge from below
1x cabal therapy
1x sutured ghoul
1x dragon breath 4x Simian Spirit Guide
4x Elvish Spirit Guide
4x dark ritual4x Tinder Wall
4x Chrome Mox1x Mox Emerald
1x Mox Jet
1x Mox Pearl
1x Mox Ruby
1x Mox Sapphire
1x Black Lotus
1x Lotus Petal
1x Lion’s Eye Diamond
1x Mana Crypt
1x Mana Vault
1x Sol Ring
4 summoner's pactIf I was to play this however I would use Leyline of Anticipation in place of Guttural Reponse (It blanks everything but Force of Will even on the draw and helps against workshops). I would also use Hermit Druid in place of the draw 7's.
I would play something like this,
4x undercity informer
4x ballistrade spy
4 hermit druid
4x narcoemoba
4x leyline of anticipation
1x dread return
1x bridge from below
2x cabal therapy
1 Azami, Lady of Scrolls
1 angel of glory's rise
1 laboratory maniac
4x Simian Spirit Guide
4x Elvish Spirit Guide
4x dark ritual
4x wild cantor
3x Chrome Mox
1x Mox Emerald
1x Mox Jet
1x Mox Pearl
1x Mox Ruby
1x Mox Sapphire
1x Black Lotus
1x Lotus Petal
1x Mana Crypt
1x Mana Vault
1x Sol Ring
4 summoner's pact