Pozo2212, While I think Storage Matrix is an interesting card in and of itself it's usefulness in this deck is extremely narrow. It will slow down the usefulness of my mana rocks, specifically Mana Crypt, Darksteel Ingot, Coalition Relic, Chromatic Lantern and Sol Ring. Once Storage Matrix hits the battlefield i'd be forced to choose between untapping my artifacts, my creatures (if Gemhide Sliver was in play), or my lands (since I run the original dual lands, i'll be more likely to have the mana I need at a moment's notice). It's kind of a lose/lose/lose scenario for me. Additionally, it may force me to abandon Scroll Rack as well. It's not a mana rock per se, but it does help me sift through my library for mana.

For this card to work the way i'd want it, i'd need to run Telekinetic Sliver, Opposition and other cards of a similar type. Unfortunately, none of those cards really work with the strategies i'm trying to use in this deck.

Additionally, it's not a very good political card. Sure, it'll slow down the more aggro themed decks but in a multiplayer game i'm sure all of my other opponents/temporary allies will be less inclined to help me out when i'm constantly slowing down their individual progress. But for now, i'll pass on Storage Matrix.

check out Progenitor Mimic I've found some pretty awesome combos w/ it in sliver decks. Not sure if it would work for your deck but worth checking out.Slivers are the best can't get enough of em' since I started playing em'

Have you seen Paradox Engine yet? It's one of the Aether Revolt masterpieces going to be in the next standard set anyways. Plenty of other artifact goodies too! Hopefully I can open one.

http://www.magicspoiler.com/aether-revolt/

Delta-117 damm your right... it's like a OP version of Intruder Alarm just great!

Pozo2212, thank you for your continued input. The hive is pleased. At one point, the Counterbalance + Sensei's Divining Top combo was in this deck, but unfortunately the combo never worked as consistently as I would've liked. In EDH, the CMCs of most decks are just too widely varied to make that combo viable. I imagine Isochron Scepter + Counterspell/any other instant would likely fair better. The issue would be just getting the right cards with Mystical/Englightened Tutor(s). Is it worth it to reserve 10/12 slots in your Commander deck for strictly control cards? Well. It depends on what it is you're building. If you're building a control oriented Sliver deck, then sure. If you count my "Extinction Event" section, I have 10 control/removal spells there.

EKEZ950, thank you for your input. The hive is pleased. Progenitor Mimic is very interesting, but unfortunately is not a sliver. I'm building this deck with only slivers. It is a cool creature none the less. Being able to constantly populate the battlefield with more and more slivers without having to do anything is pretty awesome. Imagine pairing that with Sliver Legion! However, it's not tutor-able, and it's CMC is extremely high - just hurts. Such a high cost makes this creature strictly late game at best, and by then I would have considered other options.

Delta-117 your input piques the hive's interest...as Paradox Engine is a far more acceptable Intruder Alarm. My biggest fear with Intruder Alarm was the fact that it's abilities are afforded to other players as well as myself. So if an opponent were to play Kiki-Jiki, Mirror Breaker then I would instantly lose the game if I already played Intruder Alarm. The CMC of is a bit high, but fortunately it's all generic so I could potentially play this card on turn 2 with the right draws - Mana Crypt and Sol Ring come to mind. Besides the obvious uses with Gemhide/Manaweft Sliver, this card can also be used for combat tricks:

For example, with a Quick Sliver in hand (and during my attack phase) I choose to attack with all my creatures: Striking Sliver, Venom Sliver, and Sliver Hivelord. My opponent who has a Kozilek, Butcher of Truth on the battlefield chooses to let all the damage go through, thinking he will have a free swing during his attack phase. When he declares attackers (and I sacrifice my 4 permanents ;_;) I play Quick Sliver, all my creatures untap and I assign a blocker to Kozilek, killing it off instantly while I feverishly try and establish a wincon because I know Kozilek will be back.

With the potential synergy between Paradox Engine + Gemhide/Manaweft Sliver + Heart Sliver, I could potentially play every sliver in my deck if my general, Sliver Overlord was in play. Basically, this would be the same exact synergy with Intruder Alarm, except for an extra my opponents don't get to benefit.

I like this card, and I think i'll swap it in for Synapse Sliver because it has a similar cost, albeit a bit cheaper vs. has more potential for a game winning synergy/strategy. Synapse Sliver is an excellent sliver, but I think it's usefulness is a bit limited compared to Paradox Engine.

What are your thoughts? Is my assessment accurate?

I agree on all of what you have said, I personally like Synapse Sliver but it does afterall read "whenever a sliver" rather than "Whenever a Sliver you control." Now I don't know whether you actually face much other sliver decks or not, but either way I feel compared to Paradox Engine it's useful but it's quite unlikely that it is going to be winning you games, Paradox Engine on the other hand for a generic 5cmc certainly has a lot more potential. So yes I would swap it.

Paradox engine just remember will be 1/2 of the 24 total masterpieces as a regular card within Aether Revolt too if your looking for a cheaper version.

Delta-117 Thanks again for suggesting Paradox Engine. I've read some initial impressions about the card from various forums and apparently there is a lot of hype surrounding the it. Honestly, I think that it probably won't be as great as everyone thinks it will be - but that's just my opinion. I've play-tested the card in my deck, and it's not all that great on it's own. But when paired with the likes of Mana Echoes, Gemhide Sliver, or a Sol Ring it can provide a decent amount of ramp. Additionally, it does allow for combat tricks under very specific circumstances. But that's it. Am I missing something that makes this card seem so great? At least within the context of my own deck I can see it being useful from time to time, but without mana dorks or mana rocks to play Paradox Engine just seems kind of decent at best.

I do however want to experiment with it. I feel like it'll surprise me at some point. Or maybe that's just me buying into some of the hype surrounding the card.

Don't forget that with Quick Sliver you can cast Sliver at instant speed. So you can renew your mana base, obviously produced by mana slivers and mana ramp artifacts, on opponents turn. Probably adding this I'll check more posibles combinations that requires untap my hive.

I like this iteration a lot. I have been playing slivers for a while and have been looking for what an ideal manabase should look like along side mana rocks so I can see what the flex lands should be. I have found almost all the Muscle Sliver effects to be extremely low impact in multiplayer games and have started playing only the Might Sliver and Sliver Legion as anthem effects. In their place I have generically placed slivers I consider more flexible such as Root Sliver, Frenetic Sliver, Acidic Sliver, etc. It does raise the CMC of the deck a bit but I find the effects are generally worth it as they protect from this sliver hate you speak of. Root Sliver is quite effective at protecting the combo from counterspells whereas Acidic Sliver allows you to win on the stack without using combat which has actually mattered more than once. What are your thoughts on this sort of approach? I think it makes the deck more board wipe resilient and streamlines the combo process a little better. Is there something I am missing about the low mana anthem slivers that make them higher impact in pod games?

What do you think of Metallic Mimic? Do you think it's impactful enough or not to deserve a place?

http://www.magicspoiler.com/mtg-spoiler/metallic-mimic/

This build has a much greater presence of countermagic than I would normally see in a sliver deck, which is a super interesting deckbuilding choice.

The lack of basics in the manabase also makes me worried. I've seen too many decks crumple to blood moon, price of progress, and back to basics.

Delta-117 i don't think so, cause u cant tutor him and the ability isn't good enough. except that you use a counter +1/+1 version on your slivers deck.

this guy goes well with Panharmonicon+ anything that interact with +1/+1 like Animation Module.

PD: plz check my deck. any suggestion will be recibe!
Sliver's Time!

Ah right can't tutor for it, I forgot about that part. Well that's too bad.

Delta-117, thank you for the suggestion. The hive is pleased. Metallic Mimic is interesting, as it has a a faux anthem effect, however I agree with Pozo2212's assessment. While it's nice to have a steady stream of +1/+1 counters, the card doesn't have much synergy with slivers (at least within this deck). Metallic Mimic would likely be more better suited in a deck running Panharmonicon. I'll definitely take a look at your deck as well.

Wilhelm_Screamer, thanks for the compliment. The Queen is most pleased. I decided to go with more countermagic than anything else because 1. I love counterspells, and 2. Sliver Overlord is the control oriented legendary sliver, therefore the deck should have more control oriented spells. The lack of basics was definitely done on purpose, as they're inferior compared to every other land choice in the deck. Honestly, i've never actually gone up against a deck running Blood Moon, Back to Basics, or Price of Progress. They are all definitely worrysome cards, but I do have some potential answers. If Blood Moon or Back to Basics are played, then I do have some answers with Coalition Relic, Darksteel Ingot, and Chromatic Lantern. If i'm lucky, I could also have Necrotic Sliver, Gemhide Sliver, or Manaweft Sliver on the battlefield before Blood Moon/Back to Basics hits the battlefield.

Price of Progress is a bit trickier, and the only real answer I would have for that is a counterspell. Honestly, I find it a bit shocking that Price's CMC is so low for such a potent spell. Worst case scenario I have no counterspells in hand and it's past turn 6 or 7.

I'm not too worried about the previously mentioned trio of cards, but they would make for some very interesting and difficult games i'm sure. Maybe when I actually form a sideboard for the deck (I believe you can have up to 10 cards) I will include all 5 basics. Thanks for your input.

Dake, in my opinion Frenetic Sliver's usefulness is overshadowed by Crypt Sliver and Sedge Sliver. Few boardwipes prevent regeneration, and outside of saving likely only a handful of slivers it doesn't have any additional abilities to make it more viable. Also, spending for a 2/2 with an inconsistent ability is not an effective use of your mana. In my opinion, Acidic Sliver only becomes useful after a certain amount of damage has been dealt to the opponent (If you have enough slivers and mana, you could potentially sac all and go for the kill) or if a mass removal event occurs. Root Sliver was in the deck at one point, but I hardly ever went up against a deck that warranted it's use.

Dake, thank you for your words of praise. The Queen is pleased. So why do I choose to utilize the lower CMC, smaller anthem slivers over the higher CMC larger anthem slivers? One word - efficiency. Might Sliver on it's own is a so-so at best creature. Paying for a 4/4 creature isn't worth it. The +2/+2 anthem effect also doesn't really justify the cost when you take Sinew or Muscle Sliver into consideration. Each costs (more or less) for a 2/2, and +1/+1 anthem effect. Rule of thumb in regards to anthem slivers - for every spent, you should get 2 power, 2 toughness, and one +1/+1 anthem effect (or other ability). Might Sliver is simply inefficient, and wastes mana. Megantic Sliver would be an example of a large creature that is efficient, but is irrelevant due to Sliver Legion.

In multiplayer matches, Sinew would definitely be low impact on it's own, but slivers do not fight in a vacuum and always show up in groups. Looking at things from a strictly CMC perspective, you could pay for Might Sliver to deal 4 damage per turn, or pay for Sinew and Sedge Sliver to deal 7 damage per turn. Roughly the same cost (with the right manabase, getting the right colors is irrelevant), but with more efficiency.

tldr - Lower CMC anthem slivers tend to give you more bang for your buck.

How much does it cost without foil cards?

Chickens_are_awesome, to be honest the deck would cost roughly the same price if it didn't run any foils. I'd say it'd be closer to the $1,600-$2,000 range based on my own purchases from ebay and private collectors. The majority of the cost for this deck lies in it's manabase (which obviously isn't foil). Unfortunately, running competitive slivers is very expensive.

Ok

Chickens_are_awesome, also, if you check out my "Building this deck" Glyph under the Hivestone section in the accordion, you'll be able to see how much I paid for each land in case you had any questions about specific lands.