iMtG Server: Gathering

Sliver Legion 100 cards, 0 sideboard 1 {Sliver Overlord} 5 {Island} 5 {Swamp} 1 {Arcane Sanctum} 1 {Savage Lands} 1 {Overgrown Tomb} 1 {Breeding Pool} 1 {Stomping Ground} 5 {Mountain} 1 {Crumbling Necropolis} 1 {Seaside Citadel} 1 {Godless Shrine} 1 {Sacred Foundry} 1 {Temple Garden} 5 {Forest} 5 {Plains} 1 {Watery Grave} 1 {Jungle Shrine} 1 {Blood Crypt} 1 {Steam Vents} 1 {Hallowed Fountain} 40 lands 1 {Gemhide Sliver} 1 {Brood Sliver} 1 {Bonescythe Sliver} 1 {Striking Sliver} 1 {Syphon Sliver} 1 {Thorncaster Sliver} 1 {Shadow Sliver} 1 {Sinew Sliver} 1 {Spectral Sliver} 1 {Battering Sliver} 1 {Sliver Legion} 1 {Mesmeric Sliver} 1 {Muscle Sliver} 1 {Predatory Sliver} 1 {Reflex Sliver} 1 {Virulent Sliver} 1 {Toxin Sliver} 1 {Homing Sliver} 1 {Harmonic Sliver} 1 {Root Sliver} 1 {Bonesplitter Sliver} 1 {Blade Sliver} 1 {Spinneret Sliver} 1 {Synapse Sliver} 1 {Talon Sliver} 1 {Crypt Sliver} 1 {Sedge Sliver} 1 {Shifting Sliver} 1 {Spined Sliver} 1 {Frenetic Sliver} 1 {Magma Sliver} 1 {Might Sliver} 1 {Necrotic Sliver} 1 {Poultice Sliver} 1 {Two-Headed Sliver} 1 {Winged Sliver} 1 {Horned Sliver} 1 {Galerider Sliver} 1 {Heart Sliver} 1 {Blur Sliver} 1 {Essence Sliver} 1 {Spitting Sliver} 1 {Synchronous Sliver} 1 {Telekinetic Sliver} 1 {Fury Sliver} 1 {Sentinel Sliver} 1 {Sliver Queen} 1 {Manaweft Sliver} 1 {Frenzy Sliver} 1 {Dormant Sliver} 1 {Plated Sliver} 1 {Pulmonic Sliver} 52 creatures 1 {Door of Destinies} 1 {Training Grounds} 1 {Patriarch's Bidding} 1 {Heartstone} 1 {Mana Echoes} 1 {Shared Animosity} 1 {Belbe's Portal} 7 other spells Sideboard

 {Sliver Overlord} is always the better commander in a sliver themed deck...I also think you are running to many slivers and not enough support cards like draw...I didn't see it in the deck but it could be there but {Dormant Sliver} is one of the best slivers...just need a sac outlet after you play most of your slivers to attack... {Shared Animosity}, {Mana Echoes}, and {Patriarch's Bidding} are great tribal cards...plus {mana echoes} works with {sliver queen} for infinit tokens...that's if you got queen. {training grounds} and {heart stone} help with keeping activation cost of slivers down...some are pretty high. Hope this helps.

Update ahoy!

Could use a  {Mutavault}