Zanmor

I think the deck size and enchants are fine myself. Definitely like the Dread Return (or Zombify) to bring a big guy from your graveyard. Grab one of the 8-11 cost eldrazi (for instance) or some other big creatures (I'm sure there are better ones than those eldrazi) if you want to do that. I'd probably drop Ghastly Demise in favor of Duress.
Vamps are always nice, if not overused.
Sorin Markov if you're interested in a planeswalker, but you can probably get better bang for your buck from other cards.
Finally lands: Dragonskull Summit, perhaps Bojuka Bog, Lavaclaw Reaches, Akoum Refuge, and maybe Crypt of Agadeem. Hope this helps and fair warning, I have no idea about what legacy format is like.

Oops, here's the link: http://www.mtgvault.com/ViewDeck.aspx?DeckID=92501

Really nice combo, this is awesome. I agree with the Elixir of Immortality.

I just made a big combo deck (not standard and really slow) and would love some feedback.

Yeah, I haven't played it yet but I was hesitant to drop the lands as far as I did. If anything I threw in a bunch of red mana gain spells and could drop those in place of lands. Just trying to speed it up with those.

With all the search spells I'd cut this down to 20 lands and throw in some more creatures or something.

Not bad. But for an all artifact deck you might look into artifact lands like Seat of the Synod. A good creature might be Mycosynth Golem. Then there are some 0 cost artifacts like Ornithopter and others. Just some stuff to consider. I'm sure others could give even better tips for an artifact only deck. Cheers!

Very nice. I think I'd consider some more 0 cost artifacts myself, but this is great!

Definitely solid creatures. And I guess if you're getting a couple out each turn the removal isn't too much of a problem, excepting board wipers.

Very nice. I made one of these awhile ago: http://mtgvault.com/ViewDeck.aspx?DeckID=89937

Very nice. Seems a little low on lands for me.

nice deck.

Nice, this is just the sort of thing I'm looking to tweak my blue mill with. The big guys cause trouble and everyone was running them tonight.

Thanks for the comments. Definitely have to look into Cunning Sparkmage. I know I had a Rootbound Crag or 2 but couldn't find them tonight. :/
This build did poorly though, not fast enough. Still a fun time though.

Why not run a couple of Living Death?

Nice, I like this build!

It is all about +1/+1 counters, but not every turn like from Energy Chamber. That infinite combo is my main focus, getting it into play for unlimited powerful creatures and unlimited damage from Triskelion.

Good calls, I overlooked some obvious ones. Now I need to figure out what to cut down.

But you'll never be able to play 40 rats. :( As long as you always have one or two in hand (you want to draw them about as often or a little more often than you draw lands) then you'll be fine. Why not throw in some spells or something to give this deck a little more life and versatility?

Pretty awesome combo. Only question, can the en-Kor redirect damage that doesn't actually exist?
I'm not sure. In case they can't, this can still work pretty easily. Two Shaman en-Kor target each other, just pushing 1 damage back and forth, and the Daru Spiritualist ticks each time since they're both clerics.
I would guess it would work just how you have it, but it definitely works with the Shaman en-Kor infinite loop.

Here's mine: http://www.mtgvault.com/ViewDeck.aspx?DeckID=89610

I prefer Hedron Crab, Howling Mine and 2 less Traumatize since they are less useful the more you use them. Memory Erosion is good too. Otherwise I like this build, Twincast is awesome, especially with Archive Trap.