Well, this is cool. I don't think you really need 3 Gemhide and 3 Manaweft, though. I'd make it 4 Manaweft. About the Megantic, I'd bring the count up to 4; they're just too good to pass up. For an Aggro deck, I don't really like the sound of Homing. I'd either bring them down to 1, or just cut them entirely. Hope this helps.

Oh, and nice CSS Ixidron!

Slivers are not that common in the meta, that's why I run 3-3 instead of 4-2 mana/gemhide, but stuff like Surgical Extraction or Maelstrom Pulse, those are more common, that's why I run 3-3.

about megantic, I used to run 4 of those, and they are great, but you don't want to get too many of those in your hand with not enough mana, and it's terrible if you get 2 of those in your starting hand with no mana producing sliver.

Trust me, Homing sliver is the best sliver, that thing just win games, I saw that happening over and over again, I'm on a tight spot, say I need a finisher and I have a lot of mana, or I need to get rid of a nasty permanent, I transform those Homing Slivers into an Sliver Legion or a Necrotic Sliver, if you drop a homing sliver you got full control of your deck, you can decide what to play and when to play, it's like having an enchantment that says, "if you didn't like what you just drew pay 3 and exchange that from something else".

Still, slivers decks are very very flexible, you can play them however you want and you, that's why I have a big maybeboard, just play them however you feel comfortable about.

How do you deal with Blood Moon?

@vTempest Slivers can produce mana, so you can keep playing slivers, there is also Harmonic Sliver and Necrotic Sliver, but if I have none of those in the battlefield I cannot deal with Blood Moon.

I always have Virulent Sliver in my mainboard, or in my sideboard. Great against soul sisters and it stacks, so it's a game ender as well

If you plan on going the pain land route, i'd suggest using Mana Confluence over City of Brass. With city of brass you take a damage whenever it is tapped, so in a format crawling with Pestermite and Deceiver Exarchs, you might take extra damage without needing to, but if you use Mana Confluence, you have to pay life to get the mana, not be pinged whenever it is tapped.

What is your opinion about Pulmonic Sliver? It offers both flying, and could keep slivers out of the graveyard; or does it's mana cost outweigh it being a viable option when coupled with the speed/idea of the Galerider Slivers for fast flying and Rest in Peace keeping the graveyards clear?

I do like Pulmonic Sliver and I usually have a couple of copies in my sideboard, it's great against decks with lots of creature removal.

Since your running white you could put Rally the Ancestors to the sideboard for some graveyard fun

Wow, Looks about as perfect as it gets for "modern slivers" +1 from me! Your mana base is AMAZING and wish I thought of it when I built mine :p I absolutely love your cheeky suggestion with Liquimetal Coating + Harmonic Sliver ! I just built a sliver deck The Hivelord's Legion and plan to use some of your ideas for building a sideboard.

Why not use Mana Confluence instead of City of Brass? Mana Confluence only deals damage to you when you tap it for mana, whereas City of Brass deals damage to you whenever an effect taps it. Obvious superiority is obvious.

You can use any. Mana confluence is listed as a variant, I use the maybeboard for variants. I use City of Brass because you get the damage after the mana, but for mana confluence you must pay 1 life first and then you get the mana. There are few decks capable of tapping your lands so it doesn't concern me.

Yeah, I think that Mana Confluence is better than City of Brass, because an opponent can tap a City of Brass (say, with a Rishadan Port), it will still deal damage to you, unlike Mana Confluence.

Why has no one commented 0_0