Hey, I was looking through Coldsnap and stumbled across this little beauty, before I start allow me to explain one small thing - I know that unless you're playing mono black or black with a small splash of something else this card is complete trash, however, that doesn't mean it is unplayable. Well here it is, Phyrexian Etchings:
Phyrexian Etchings

Enchantment
Cumulative upkeep

(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the end of your turn, draw a card for each age counter on Phyrexian Etchings.
When Phyrexian Etchings is put into a graveyard from play, you lose 2 life for each age counter on it.
Right, there it is (I tried to put a picture but failed

. Could someone please tell me how to put one in?)
I've been toying with this using proxies and it nearly always ends up insane, especially when you drop something such as Necro or Bargain, but then again those 2 don't need any help in completely slaughtering your opponent

. The current deck I'm using is:
Mana Base1 Mox Jet
1 Lotus
1 Sol Ring
1 Petal
1 Crypt
1 Strip Mine
17 Swamp
Anti-Creature1 Silent Arbiter
4 Diabolic Edict
3 Innocent Blood
Draw/Search4 Phyrexian Etchings
1 Bargain
1 Demonic Tutor
1 Vampiric Tutor
1 Imperial Seal
Kill4 Zombie Infestation
4 Hecatomb
Others4 Duress
4 Dark Ritual
4 Ivory Tower
1 Feldon's Cane
Right, there's my deck, as you can see it uses Ivory Tower to protect you while you set up, and the kill (which is really bad, I just couldn't think of anything other than that or Juzam Djinn) is Hecatomb, which is obviously brought in using Zombie Infestation.
Anyway, the deck's not the point, this card, it's been quite often for me to drop it on turn 1, then it doesn't do much except get you a few early draws, but unless you pull a non-land mana source it just eats away at your mana. Turn 2 or 3 is usually the best time to drop it, beings this deck in particular only really needs 1 or 2 mana to keep going, but that's obviously just what I've found, the best turn to drop it will obviously vary depending on your mana curve and what cards in particular you rely on.
Here's the pretty common situation I find myself in at the moment with this card.
Turn 1: Land, pass
Turn 2: Land, lotus/mox/ritual, Etchings
Turn 3: Land, random card (usually tower or tutor by now), draw.
And so it goes for another few turns until I am drawing a ridiculous amount of cards and have masses of zombies out.
This card gives you an almost ridiculous amount of card advantage as long as you can keep the upkeep cost under control, but it could be very fun with Power Conduit or Eon Hub actually

.
The tempo kill is very annoying, hence why I've found you need to be mono black in general, but, the card draw is nearly on par with Necro and Bargain, but let's be honest, in this format you find little that you desperately need to play beyond 3 or 4 mana. And with moxen etc it's not all that hard to get that sort of mana going by turn 2 or 3 at the latest.
Well I hope I wrote enough convincing evidence, any thoughts on the card would be appreciated (and any ideas on the deck would be cool, but that's not the point of this thread).