Your search for "Muscle Sliver" revealed the following:
Blur Sliver (Foil) (M14) from Magic 2014, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Daarken Card Text:Sliver creatures you control have haste. (They can attack and T as soon as they come under your control.)
Lymph Sliver (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Ittoku Card Text:All Sliver creatures have absorb 1. (If a source would deal damage to a Sliver, prevent 1 of that damage.)
Armor Sliver (TMP) from Tempest, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Scott Kirschner Card Text:Each Sliver gains “2: This creature gets +0/+1 until end of turn.”
Hollowhead Sliver (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Johan Grenier Card Text:Sliver creatures you control have "T, Discard a card: Draw a card."
Dregscape Sliver (Foil) (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Zack Stella Card Text:Each Sliver card in your graveyard has unearth 2.Unearth 2 (2: Return this card from your graveyard to the battlefield....
Might Sliver (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Jeff Miracola Card Text:All Slivers get +2/+2.
Gemhide Sliver - TSP Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Matson Card Text:All Slivers have "T: Add one mana of any color to your mana pool."
Lavabelly Sliver (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Mark Behm Card Text:Sliver creatures you control have "When this creature enters the battlefield, it deals 1 damage to target player or planeswalker and...
Cleaving Sliver (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: David Gaillet Card Text:Sliver creatures you control get +2/+0.
Capricious Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Brent Hollowell Card Text:Sliver creatures you control have "Whenever this card deals combat damage to a player, exile the top card of your library....
Venser's Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Carl Critchlow
Belligerent Sliver (M15) from Magic 2015, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Raymond Swanland Card Text:Sliver creatures you control have "This creature can't be blocked except by two or more creatures."
Opaline Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Dave Dorman Card Text: Surprise SliversAll Slivers have "Whenever this permanent becomes the target of a spell an opponent...
Harmonic Sliver (Foil) (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Luca Zontini Card Text:All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."
Harmonic Sliver (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Luca Zontini Card Text:All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."
Battering Sliver (Foil) (PLC) from Planar Chaos, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Greg Staples Card Text:All Slivers have trample.
Spined Sliver (Foil) (H09) from Premium Deck Series: Slivers, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Ron Spencer Card Text:Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it....
Winged Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Anthony S. Waters Card Text:All Slivers gain flying.
Two-Headed Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Raoul Vitale Card Text:All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)
Telekinetic Sliver (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Randy Elliott Card Text:All Slivers have "T: Tap target permanent."
Scuttling Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Mike Bierek Card Text: Surprise SliversSliver creatures you control have "2: Untap this creature."
Mindlash Sliver (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jeff Miracola Card Text:All Slivers have "1, Sacrifice this creature: Each player discards a card."
Synchronous Sliver (PLC) from Planar Chaos, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: E. M. Gist Card Text:All Slivers have vigilance.
Harmonic Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Luca Zontini Card Text:All Slivers have "When this creature comes into play, destroy target artifact or enchantment."
Cloudshredder Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Filip Burburan Card Text:Sliver creatures you control have flying and haste.
Quick Sliver (Foil) (LGN) from Legions, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: John Avon Card Text:You may play Quick Sliver any time you could play an instant.Any player may play Sliver cards any time he or...
Reflex Sliver (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Luca Zontini Card Text:All Sliver creatures have haste.
Enduring Sliver (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Josh Hass Card Text:Outlast 2 (2, T: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)Other sliver creatures you control have...
Constricting Sliver (Foil) (M15) from Magic 2015, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Karl Kopinski Card Text:Sliver creatures you control have "When this creature enters the battlefield, you may exile target creature an opponent controls until...
Sinew Sliver - PLC Reprint (Foil) (PLST) from The List, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Steven Belledin Card Text:All Slivers get +1/+1.
Quick Sliver (Foil) (H09) from Premium Deck Series: Slivers, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: John Avon Card Text:FlashAny player may play Sliver cards as though they had flash.
Might Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Jeff Miracola Card Text:All Slivers get +2/+2.
Crystalline Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Allen Williams Card Text:All Slivers have shroud. (They can't be the targets of spells or abilities.)
Screeching Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Stuart Griffin Card Text: Surprise SliversAll Slivers have "T: Target player mills a card."
Sliver Legion (Foil) (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Ron Spears Card Text:All Sliver creatures get +1/+1 for each other Sliver on the battlefield.
Manaweft Sliver - M14 Reprint (Foil) (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Trevor Claxton Card Text:Sliver creatures you control have "T: Add one mana of any color to your mana pool."
Cautery Sliver (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Dany Orizio Card Text:All Slivers have "1, Sacrifice this permanent: This permanent deals 1 damage to any target."All Slivers have "1, Sacrifice this...
Firewake Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Alexandre Honoré Card Text:All Sliver creatures have haste.All Slivers have "1, Sacrifice this permanent: Target Sliver creature gets +2/+2 until end of turn."
Syphon Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Tyler Jacobson Card Text: Surprise SliversSliver creatures you control have lifelink.
Spiteful Sliver (MH1) from Modern Horizons, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Johann Bodin Card Text:Sliver creatures you control have “Whenever this creature is dealt damage, it deals that much damage to target player or planeswalker.”...
Manaweft Sliver (Foil) (M14) from Magic 2014, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Trevor Claxton Card Text:Sliver creatures you control have "T: Add one mana of any color to your mana pool."
Opaline Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Dave Dorman Card Text:All Slivers have "Whenever this creature becomes the target of a spell an opponent controls, you may draw a card."...
Telekinetic Sliver - TSP Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Randy Elliott Card Text:All Slivers have "T: Tap target permanent."
Root Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Matt Thompson Card Text: Surprise SliversThis spell can't be countered.Sliver spells can't be countered.
Basal Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Drew Tucker Card Text:All Slivers have "Sacrifice this creature: Add BB to your mana pool."
Blade Sliver (Foil) (LGN) from Legions, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: David Martin Card Text:All Slivers get +1/+0.
Screeching Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Stuart Griffin Card Text:All Slivers have "T: Target player puts the top card of his or her library into his or her graveyard."...
Quilled Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: John Matson Card Text:All Slivers have "T: This creature deals 1 damage to target attacking or blocking creature."
Screeching Sliver (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Stuart Griffin Card Text:All Slivers have "T: Target player puts the top card of his or her library into his or her graveyard."
Sliver Hivelord - M15 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Aleksi Briclot Card Text:Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)