DECK STRATEGY

Casting Slivers for Free

-Cascade ability: granted to all slivers via commander, The First Sliver.  Note that even if a Sliver spell is not paid for with mana it will cascade so long as its "cast."
-Aether Vial

-Pyre of Heroes

Mana Fixing
-Fetch Lands.  Once Crucible of Worlds is on the battlefield, I can reuse sac'd fetch lands to further pull shock lands and basic lands hidden in the deck.  Secondarily, this combo allows me to access non-land cards in my deck more consistently because the percentage of land cards still in the deck decreases the more I fetch, and I can recast fetch lands from the graveyard!
-Gemhide Sliver/Manaweft Sliver
-Cryptolith Rite gives all creatures an "any color" mana ability
-Prismatic Omen gives all lands every basic land type
-Smothering Tithe gives Treasure tokens whenever opponent draws a card, unless opponent pays to stop that trigger

--Previously mentioned free casting also gets around need for mana fixing somewhat

Evasion Abilities
-Flying (Cloudshredder Sliver, Galerider Sliver)
-Shadow Sliver
-Shifting Sliver
-Indestructible (Sliver Hivelord)
-First Strike (Striking Sliver)
-Menace (Two-Headed Sliver)

-Frenetic Sliver

-Deflecting Swat

Removal Abilities and Spells
-Necrotic Sliver

-Hibernation Sliver
-Deadly Rollick
-Path to Exile
-Vindicate
-Aura Shards

Tutors and Tutor Like Abilities
-Eladamri's Call (creature)
-Enlightened Tutor (enchantment or artifact)
-Mystical Tutor (instant or sorcery)
-Vampiric Tutor (any card)
-Worldly Tutor (creature)
-Homing Sliver (slivers)
-Sliver Overlord (slivers)
-Pyre of Heroes (slivers)

Protection Abilities and Spells
-Spell Pierce like effect (Diffusion Sliver)
-Heroic Intervention
-Mana Drain
-Teferi's Protection

-Flawless Maneuver

-Obscuring Haze

-Fierce Guardianship

Health Gain
-Peach Garden Oath
-Essence Sliver
-Syphon Sliver

-Venser's Journal

Card Draw

-Rhystic Study

-Mystic Remora

Alternate Win Conditions
-Mortal Combat = alt win con if 20+ creatures in graveyard during upkeep.  If there are a combined 20+ creatures in my graveyard AND my hand, I can get all creatures in my hand at instant speed into the graveyard with One With Nothing.  Idea is to play it during my opponents end step, right before it becomes my turn. Staple card draw spells (Mystic Remora, Rhystic Study) and Library of Leng allow me to draw and then keep many cards in hand as I desire.
-Epic Struggle similarly wins the game if I have 20+ creatures on the battlefield at my upkeep.
-Giving opponents 10 poison counters via Virulent Sliver.  (Happens twice as fast if Bonescythe Sliver is granting double strike)

SPECIAL NOTE: Avoid commander tax via Hibernation Sliver ability which returns slivers (in this case the commander) to my hand by paying 2 life.  This allows me to cast it again from my hand, rather than pay 2 mana more with each additional instance of casting it from the Command Zone.  In this way, the ability functions similar to Command Beacon, except the effect is repeatable, wheras Command Beacon can only be used once since its ability only triggers when it is sacrificed. (Except when Crucible of Worlds is in play, in which case I can recast Command Beacon from the graveyard repeatedly).