This is what I played in the UMTW, scrubbing out day one. Placing fifth on day two. I would elaborate, but this is a deck discussion, not a tournament report.

Land 17

4 Polluted Delta
2 Flooded Strand
2 Island
2 Swamp
3 Underground Sea
3 Volcanic Island
1 Academy Ruins

Creatures 14

4 Trinket Mage
3 Magus of the Moon
4 Dark Confidant
3 Epochrasite

Artifacts 8

3 AEther Vial
2 Sensei's Divining Top
1 AEther Spellbomb
1 Pithing Needle
1 Engineered Explosives

Spells 21

4 Smother
3 Counterbalance
4 Force of Will
4 Brainstorm
2 Predict
2 Stifle
2 Magma Jet

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Sideboard

3 Pyroblast
2 Hydroblast
2 Hibernation
1 Tormod's Crypt
1 Phyrexian Furnace
1 Scrabbling Claws
4 Duress
1 Pithing Needle

For day two, I made the following changes: -2 Stifle, -2 Predict, +3 Spell Snare, +1 Bonesplitter. Jury is still out on the changes.

Now, what the hell was I thinking?

Trinket Mage: He's amazing. Chances are, when he comes down I can grab an answer to anything the opponent is going to throw my way. Or has already been thrown, etc.

Magus of the Moon: This guy has been gaining popularity as of late, for good reason. Sometimes, the only way I can win is if my opponent stops playing shit . It's effective. Very. Also, swings for two. My deck is packed with shitty dudes.

Dark Confidant: Oh look. Draw Engine. Hot. Low Curve. Sensei's Top. Move along, nothing new here.

Epochrasite: Really? Yeah. He Vials out as a 4/4, is never gone for long, and in his horrible 1/1 form he still chump blocks or carries a Bonesplitter. He is also the biggest guy in my deck. Sometimes. He's cheap, and I can play him when I'm moon-locked.

AEther Vial: I can play guys without using mana, so I can keep countering and Topping or whatever it is I do with my land. Also, helps actually put threats on the table under blood moon.

Sensei's Divining Top: This card does a lot. I have 10 shufflers, Counterbalance, and Bob.

AEther Spellbomb: Trinketable Unsummon. It's in the graveyard hate trinket slot right now. I know it's not graveyard hate, but it at least deals with the reanimator strategies. It's also generally more relevant to board position than say, Tormod's Crypt. At least for the maindeck.

Pithing Needle: Damn, this card is versatile. Stops what it needs to.

Engineered Explosives: Maindeck answer to various non-land permanents.

Smother: I'm not playing white, this happens to be the second-best removal spell in the format.

Counterbalance: This card is so hot/cold. It's either a complete beating or a waste of cardboard. I mean, yeah. Chalice of the void targeting you
is pretty decent.

Force of Will: It's okay. If you like not-losing.

Brainstorm: Best cantrip. Also, I'm running 17 lands, 10 shuffle effects, Bob, and Counterbalance. I guess it works well with those other cards I'm playing.

Magma Jet: Extra removal, plus the interaction with Counterbalance, Bob, and Top.

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Predict: I felt I needed more card draw, since my only advantage engine was emo Bob. Plus, it was cute with counterbalance. I've since changed my mind. I feel the slots were better spent on something that actually could directly affect the gamestate.

Stifle: I love the versatility of the card. However, I rarely ran into situations where it was any better than a pithing needle.

Spell Snare: I think it's better than Predict. It hits more stuff than Stifle. It countered a few Tarmogoyfs for me over the weekend. Boarded out a fair bit, but generally for more relevant cards. ex: out for hydroblast against mono-red.

Bonesplitter: Seems decent. Turns all of my dudes into genuine threats. Not bad to trinket for if I have nothing better to get.

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I'm a bit iffy on the six slots currently occupied by Bonesplitter, Spell Snare, and Magma Jet.

So talk about my deck. Or don't. It's a pile anyway.