Salient

[1.] Pay 1 life to play Strip Mine. [2.] Sacrifice it to destroy a land. [3.] Pay 1 life to play Strip Mine. [4.] Sacrifice it to Zuran Orb, gain 2 life.

Rinse. Repeat. All the opponents' lands are destroyed, no net life lost. Now repeat steps 3-4 to gain an arbitrary amount of life.

This is a well-known (and little-used) combo. It requires more cards and more mana-intensive cards than Voltaic Key + Time Vault, which nets you infinite turns for practically nothing.

This is possibly the only deck that dies to Grindstone without a Painter's Servant in play. :P

It's not a real deck and doesn't work, NinjaGamer.

...ANT kinda sucks now, they banned Mystical Tutor.

Running one and only one Day of Judgment seems low-value; are you at all likely to draw it? You should test ten games and tell us the results. :P

Chains of Mephistopheles! Chains of Mephistopheles! Chains of Mephistopheles!

...you should go find some Chains of Mephistopheles! So you can include Chains of Mephistopheles!

(Look it up and you'll see why...)

You should run four Jace, the Mind Sculptor (if you have them).

Shape Anew is not faster than Forgemaster. The chance you'd reveal Blightsteel is very small. You'd probably get a Memnite or something equally useless. Shape Anew only makes sense if you're confident Blightsteel is the top card, which is going to be very rare.

I put together a deck containing Mishra's Factory and Inkmoth Nexus and Shape Anew and one Blightsteel Colossus, for which Shape Anew and Polymorph work fairly well. But you need manlands that become artifacts, or some other card that can "become" an artifact. You can't have any artifacts in your library other than Blightsteel.

Another option for protection would be Turn Aside.

Isn't Distortion Strike a bit of overkill? Presumably once you get Blightsteel into play, if anything prevents you from winning, it won't be your opponent's blockers. You might replace the Distortion Strikes with Chimeric Mass. You can play it as an artifact for zero to feed Forgemaster, or play it for mana to put a threat on the board and draw opponents' creature hate. Another option might be Riddlesmiths (for speed) or Stoic Rebuttal (to protect Blightsteel once in play).

*approve*

In fact:

Helm of Awakening* + 2 Sensei's Divining Tops + Arcbound Crusher + Dismantle + Darksteel Reactor

...Not efficient, but definitely all-caps EPIC. Can you even imagine?

*(or Cloud Key, or Etherium Sculptor, or Mycosynth Golem...)

I'd remove Mind Twist and add some Chrome Mox to help speed up Shared Fate, and include 4 Grim Tutor.

Regarding Edna's suggestion, Exotic Orchard isn't necessary because you'll draw their lands. I'd be most worried about (1) control/counterspell and (2) opponents' permanents that hit the battlefield before you get off the ground.

Truly fun idea, and an innovative use of Relentless Rats.

Oh my god, it's.. it's... beautiful.

Best deck I've seen this year. A perfect "oh god why didn't I think of that" for those who like to play Johnny Elves. Paging the Legacy deck desk, anyone?

I'm going to go build a Legacy version of this *now*. Thanks for the inspire.

Congratulations on the hundred decks, and wishing you many more! ~Sal.

Also consider, perhaps,

-4 Winter Orb, -4 High Tide, -3 Boomerang

+4 Counterbalance, +3 Sensei's Divining Top, +4 Brainstorm

Okay, this deck assembles Chronatog, Stasis, and Frozen Aether; presumably Stasis must hit play last. That seems difficult to pull off, even with fifteen counters. Normally a prison deck doesn't need to generate card advantage, but your deck needs some draw power.

Force of Will seems essential. Why on Earth would you run Mana Leak over Force of Will? For that matter, why run Hallowed Fountain over Flooded Strand?

Suggestions
-4 Mana Leak, +4 Force of Will
-3 Boomerang, +3 Daze
-4 Hallowed Fountain, -4 Island, +4 Flooded Strand, +4 Scalding Tarn (or substitute Underground Sea or whichever Island-fetching fetchland you prefer)

You're thinking of Shahrazad, which is tournament banned:

http://gatherer.wizards.com/Pages/Card/Printings.aspx?multiverseid=980

"However this is the first one with a win condition and not just an eternal stall."

This is not true. Most prison decks have a finisher. Mindslaver is nowadays popular in Lands Prison, and recurring Jester's Cap with Academy Ruins used to be somewhat popular. The Stax prison decks in Vintage use Lodestone Golem and Juggernaut.

Isochron Scepter is not banned in Legacy or Vintage.

http://gatherer.wizards.com/Pages/Card/Printings.aspx?multiverseid=212626

"it has been ruled that setting up a 'prison' will count as a draw"

This is a false statement.

"On another note; this is probably the best prison I've seen yet, props for that."

As MTG Vault's resident prison deck enthusiast, I'll chime in to say -- it's good, but it's not Vintage or Legacy tournament viable, much less broken. Superior prison decks have better synergy, stronger cards, and don't require a three-card combo to hit play. Still, you've rediscovered and revived an old control-prison mechanic that used to be combo'd off with Enduring Renewal. I imagine your deck is a blast to play.