With the amount of clones that are going to be in standard, I couldn't help myself with building this deck. It's really fun! It might not be the best, but I've always had a blast with it.
The list is -really- fun to play, but a bit shaped to my meta. It is really really swarm/token heavy, which is why I have maindeck Curse of Death's Hold and Sever the Bloodline with a bit of Evil Twin, as a slower method.
The idea is to use early ramp of Birds and Rangers to get set up, with a Heartless Summoning thrown in. While this does kill any/all of the birds in the deck, I have found that the Heartless Summoning takes the place of Birds, when I don't get the other.
Most of the time, my creatures are outclassing opponent's creatures, even with early game plays of clones, as they can be 'redone' through the use of Deadeye Navigator.
Which brings the main use of the deck. Deadeye Navigator turns everything from "decent" to "abusive". Deadeye Navigator blinking itself or a Frost/Primeval Titan allows you to lock down and ramp forward without any hope for removal, as you either wait for the opponent's end step, or just do it when you have excess mana. Both options are fine.
The combo with Acidic Slime/Exarch are near abusive, letting them completely cut off a color, which is really nice in my meta, since dual/tri color decks are the norm, which just makes the denial that much more effective.
Counterpart is initially a bombo with the navigator, but the ability to 'save' a creature has saved many games, and the flashback has been relevant, due to the ramp the deck provides. Even though it's not a true ramp deck, I've never failed to play a land almost every turn for the first 6 or so turns or so, which almost always guarantees I get a titan or navigator down (removal-lite environment). While in a control match, I'd wait, Heartless Summoning allows me to go that much faster, leaving mana up for the Navigator.
Mindcrusher is a pretty brutal card, though, as I've found out. The ability to use him with clones is amazing, due to them gaining undying, and being able to come back as another clone. The mill can be seen as bad some times, but it hits the sweet spot mana cost of 6, letting it be interchangable with Titans and the like. So far, it hasn't disappointed yet.
Infinite Reflection is something new I've been testing, but turning all creatures, birds included, into a Titan is just too big of an opportunity to pass up.
With all that, the types of Clones should be pretty obvious. Metamorph is the best, of course, while Evil Twin is pretty darn close. Normally it's not that good of a card, but the ability to reset to any threat is -very- useful, especially if the opponent is slowed down at all.
But, yeah, that's the deck! It's still pretty new, but I've had much fun with it.
As a note, I've been tempted to put Phantasmal Image in the deck, but it plays really poorly with the Navigator.