ho says Slivers aren't a force to be reckoned with in Standard? You throw enough of 'em into a deck and something sweet is bound to happen, as today's list proves. This is one of the most streamlined decks I've had the pleasure of featuring, but that seems to be a consistent characteristic of the Sliver tribe. It rewards you for playing nicely, but in a very Borg-like way. If you are going to be Slivers, you better be SLIVERS, with very little room for anything else.
Even though this deck is literally 4 Domri Rade, 4 Ghor-Clan Rampager, and a million Slivers (including 4 lands that are Slivers), there are still different tiers of Slivers. The first tier is the main engine, featuring the Slivers that make this all worth it. I'd put Predatory Sliver and Bonescythe Sliver there, as both give you the best payoff for playing all Slivers.
The second tier of Slivers are the strong utility Slivers. Manaweft Sliver, Blur Sliver, and the one Megantic Sliver go here, as all of them provide good abilities that only slightly fall short of the tier-one Slivers.
The last tier of Slivers are the spear carriers. These Slivers are in the deck just because of their type line, and even though they do have board-affecting abilities, they are really just there to benefit from their more productive relatives. Striking Sliver, Sentinel Sliver, and Steelform Sliver are here, and are integral to hitting a critical mass of Slivers even if they aren't the real meat of the deck. Mmm, delicious Sliver meat.
The only non-Sliver cards are in the deck because they offer powerful abilities that Slivers can't. Domri Rade draws extra cards and fights, both of which are in high demand, and Ghor-Clan Rampager lets your Slivers march past any size blocker. It's also filthy with Bonescythe Sliver, which is not hard to set up.
Mutavault is another awesome part of the puzzle, and without it I don't think this deck would have quite enough gas. A free Sliver that doesn't even cost you a card is insane, and this might be the best Mutavault deck I've seen to date.
The sideboard has a few effects that let you change your game plan against different decks, but I'd advise against sideboarding too heavily. This deck really can't swap out too many cards; once it loses critical mass, you end up with a pile of 1/1 first strikers and 2/2 vigilant Bears.
Standard – 3–1, Magic Online Event
Luis Scott-Vargas plays, writes, and makes videos about Magic. He has played on the Pro Tour for almost a decade, and between that and producing content for ChannelFireball, often has his hands full (of cards).