The goal is to become immune to damage and most effects, then move on to killing your opponent.
The idea is to put Pariah's Shield on Darksteel Myr, becoming immune to damage as long as the combination remains in affect. Tinker allows you to do this without needing five available mana, by converting cheaper artifacts.
Darksteel Forge can then be used to ensure that Pariah's Shield is not destroyed directly. Padeem, Consul of Innovation can then be used to make your artifacts hexproof, removing any targeted methods to get rid of Pariah's Shield or Darksteel Myr.
Putting out Mycosynth Lattice will remove the option to destroy Padeem, Consul of Innovation, by making both its own hexproof and Darksteel Forge’s indestructible apply to Padeem, Consul of Innovation itself.
At this point, you will be immune to damage directed against you the player, destruction effects or combat damage on your permanents and any effect that targets your permanents. The Elixir of Immortality in the deck also protects against milling out, so you are immune to most forms of milling decks and will eventually win by your opponent milling to death.
Once you are at this stage, most decks will either be unable to affect you or will require fairly specific cards. An example of something that can still affect you is effects that do not target or destroy specific permanents, like some forms of board wipes.
Now that you are hard to kill, you have a few ways to cause damage or win automatically. Bloodforged Battle-Axe can be equipped onto any of your creatures, including an Ornithopter.
Provided you can cause damage with it, it will generate increasing numbers of token copies that can be equipped onto the same or multiple creatures. This lets you keep ramping up the damage until the opponent cannot defend or compensate. If the creature you have equipped cannot get through initially, you can use Aqueous Form to make it unblockable.
If the opponent has made it so you cannot effectively defeat them with damage, Azor's Elocutors may be used to automatically win after five upkeeps. Since you cannot be dealt damage, the opponent is unlikely to have a way to stop it, unless they can reduce counters directly.
Does this seem sufficiently paranoid?
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Personal Errata
In Case of Infect: This deck is rather easily countered by infect. As far as I can determine, in the case of an opponent dealing damage to you with an infect creature, the damage is still moved to your indestructible creature. However, it is dealt to the creature in the form of -1/-1 counters.
Since indestructible creature’s are still sent to your graveyard when their toughness reaches 0, functionally being destroyed, this can get around your inability to be damaged.
Personally, in the event of being up against an opponent who is likely to use infect, I would recommend replacing some of the cards less likely to be needed (such as Azor's Elocutors and Elixir of Immortality) and replacing them with either Solemnity or Melira, Sylvok Outcast.
Of course, this will require you to mix in either White or Green land, which makes the deck somewhat less streamlined. However, it does give you a way of completely removing infect as a threat.
Platinum Angel: Yes, I know Platinum Angel would have been way easier, but this was more convoluted and fun to design.
