MTG Salvation

1. You could probably use a few basics. Say, assemble your mana pie and add 2 basics of each color, except for the color with the least presence which probably would do well wit just one; this will have the added effect of enabling checklands such as Cinder Glade. Then throw in stuff that can fetch you said basics, like, say, Yavimaya Elder or Sakura Tribe-elder. Out the window go taplands and stuff requiring you to pay or sac, such as Ancient Ziggurat.
2. In my modest experience, I have yet to find any of these three slivers overkill. If anything, Sedge has the most staying power, because besides the obvious the opposition is usually willing to let it pass in favor of juicier targets. Now, on the other hand, don't ever expect Synapse to survive more than two whole rounds (unless your foes are weak, really dumb, or both), and Virulent should see play only when you're in place to profit from it or else it will have a short (and exciting?) life.
3. I reach this point after noticing most ramp advice I could give you falls under the first point, but I have this to add: where is your Karametra, God of Harvests? With such a huge load of creatures, you could have them come into play with a tribute you can put to use. Now, card draw... honestly, I have a strong bias against blue, which is of course the best color for this. I myself have tried to mitigate this problem with Dormant Sliver, Synapse Sliver, enchantments like Phyrexian Arena and thralls like Bloodgift Demon. Dormant is brutaliciously powerful, but it can hamstring you if you have no way to get rid of it, which makes sac outlets or Hibernation Sliver even more useful.

1. IMHO the more haste the merrier. Considering all your stuff your slivers do you want to have as many redundant ways of having them jumping into the fray ASAP.
2. A sliver swarm you can deploy quickly will have everyone nuking you back to the stone age very fast. Remember that most aggro decks don't fare well on multiplayer EDH because they have to contend with many opponents. I agree that utility > health.
3. Right call here. Nothing to add.
4. Rhystic Study can have effects other than providing simple card advantage - it can annoy the hell out of everyone else. I know, nothing new there, but be careful when you field it. Your choice cards are all very good, even if I prefer filling my hand via synergy between cards instead.
5. Catastrophe is my weapon of choice when destroying stuff indiscriminately. Given how you will be given no quarter by the enemy in most if not all situations, depriving people of their bread basket while you have a swarm of Birds of Paradise lookalikes is a perfectly valid tactic. Blasphemous Act is an amazing pick though, and one I'm adding to the useful cards list if I haven't done so already.
6. In my own experience Scroll Rack isn't nowhere nearly as good as other stacking/drawing cards. Hey, even Crystal Ball has proved being a better pick when tested.
7. This one merits another list:
• Spirit of Resistance is amazing on paper, though rather difficult to pull off in practice and extremely vulnerable to disruption. The more shields you throw up, the more interested everyone is in nuking you. Or at least that has been my experience.
• Skyshroud Claim is one of the best ramp cards there are.
• Lotus Petal is a waste of a slot. Great if you have it in your opening hand or if you draw it on the first few turns, but you can pack only one of those.
• Door of Destinies is another card which looks amazing on paper but does not perform up to expectations in practice.
• On the other hand, Sterling Grove IS exactly as amazing as it looks on paper. Supposing that you run tons of enchantments, that is.
• Hive Stirrings is one card I have actually never used... I suppose it depends greatly on what other slivers you have in play.
• That Amulet of Vigor is an amazing solution for a problem you don't have, except for those 6 lands. I suggest you decide on a case-by-case basis whether it's more advantageous to take the life hit or the speed hit.

1. I agree that the +1/+1 slivers are a complete waste of a slot each in EDH. I used to think that of Megantic Sliver too but it is a game changer when you have very few slivers in play.
2. Why pack Talon Sliver at all when you have a 1cmc option available instead? Actually, I don't run first-strike strike-giving slivers at all when I can ship Bonesplitter Sliver instead, which is a very cost-effective card IMHO.
3. My first impulse would be to sacrifice life over speed if you have to build a budget mana base. Shocklands are an absolute must here IF you're going to ship fetches, but if you won't, filter lands are an excellent second choice, and I wouldn't go for any taplands other than the Alara shardlands in most cases.
4. Given enough rocks or ways to inflate your resource yields, I'd say you can skip a Gaea's Cradle. Read again: given enough. And consider the amount of creatures you run. It's an expensive card if there's ever been one, agreed...
5. Darksteel stuff is your answer to Harmonic Sliver's ability. Hell, I consider a Darksteel Ingot to be a mandatory include, no matter what, this being one of the reasons.
6. Purphoros, God of the Forge has been an absolute and complete monster for me, period.

• I haven't been able to bring myself to like Crib Swap that much, but I can recall several episodes where it would have been oh so handy. I don't know, I don't like giving slivers to my opponents, even if they're lowly 1/1 tokens. Can't decide here.
• Whether or not to pack Battle Sliver hinges basically on how aggressive your playstyle and battle plans are, supposing you didn't pack Might Sliver and Megantic Sliver first.
• Diffusion Sliver is not going to stop a determined opponent, least of all in a resource-overrich environment such as EDH. Waste of a slot IMHO. In 1v1 it gets marginally better... emphasis on marginally.
• Mana Confluence I would prefer over City of Brass any day of the week. Still I'd look for other options first.
• Collected Company is a nice shenanigan, which I'm going to include on the list of useful cards. I feel inclined to consider you don't get enough bang for your buck considering how many interesting cards you have that could use this slot, though.
• Trace of Abundance paints a target on the land you enchant. You could conceivably use this as a beacon for the opposition to nuke another player's land while simultaneously playing politics by helping out someone else... still once again, I feel there are other cards more deserving of a slot than this one. IMHO any ramp spell > this.
• Consider you run a five-color deck Fellwar Stone is always an excellent pick.
• Evolving Wilds and Terraforming Expanse are great choices if you run some basics, which I recommend you do in any case. When someone Blood Moons the table you don't want to be left with a load of mana you can barely use.

• I've never been that much of a fan of things like Conspiracy or Hivestone because they tend to behave as removal magnets, and they also tell the enemy you have some thralls that are so juicy you just can't let them hang around un-slivered. This turns your deck into an interesting target for a Bribery, which is something I avoid like the freaking plague. That's one card I hate if there's ever been one.
• This is the first time I see Scavenging Ooze in a slivers deck. I suppose it plays nice with the two cards I just mentioned, and it is an amazing hose against decks that do funny things with graveyards. (The Mimeoplasm comes to mind.) What is your basis for including it?
• Temur Ascendancy is a killer going straight to my wantlist. I'm not going to bore you with the mayhem this can cause if you just play Megantic Sliver alongside this.
• Also Alesha, who Smiles at Death. Offense and recursion packed in a single effect? Yes please!

• Wow, the things I could do with Bident of Thassa! The passive ability is cute, but the activated one is a steal. You can use it to kill many useful critters with poor combat potential that way - or force their owner to spend resources to protect them. How come I didn't consider that before?
• Grave Pact is something I did consider, but the very specific cost has kept me from actually packing it. Of course, that's why you have stuff like Urborg, Tomb of Yawgmoth and Cabal Coffers, but you don't bet on having them all the time. Still, the carnage you can wreak with it...
• I used to run Privileged Position in the early builds of the combo deck, but I ended up ditching it because it actually encouraged the opposition to blow up my stuff. Maybe your pod isn't as trollish?
• Spectral Searchlight is something I'm definitely going to fish for in my commons box. Good for fixing and politics!
• Treasury Thrull was a total surprise and an enabler for all kinds of naughty given deeper thought. *Approving chitter*

• I'm surprised you're not running Krosan Verge. Even if I ditched all my ramp, I would still keep it. At the time being I'm testing a build with fetches, the aforementioned Verge and lots of artifact mana sources - but no direct ramp spells.
• After trying out many, I settled for Catastrophe as my single nuclear warhead. All is Dust I used for a long time along with Ghostflame Sliver as well; having Sliver Hivelord around, I can't say which is the better nuke; I think I prefer being able to strike either at my opponents' military or economy.
• If you're looking for draw options built into the swarm, Dormant Sliver is the card to go. If you're going to field it, you'd better have some sac outlets, or a way to bounce it - you don't want to be on an advantageous position for an alpha strike, only for your slivers being asleep. Rhystic Study, in my opinion, is more of an annoyance than an outright card advantage engine unless you have enough countermagic to defend it.
• Yisan, the Wanderer Bard goes straight into the useful cards list for being a Swiss Army knife of sorts. *Nods at Raizen*
• How do the Dragons work out for you? Or is it just me that I utterly suck at using them? I never found a planeswalker that nailed it.

Quote from Caedis_Legacy »

Out of curiosity, can the Sliver deck only be ran successfully in commander form? Or is there a way to run a sliver deck based on 1v1 60 card rulings successfully?