Syphon Sliver

Sliver creatures you control have lifelink. (Damage dealt by a Sliver creature you control also causes you to gain that much life.)

Megantic Sliver

Steelform Sliver

Battle Sliver

Sliver Legion

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

Constricting Sliver

Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield."

Bonescythe Sliver

Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

Sentinel Sliver

Sliver creatures you control have vigilance. (Attacking doesn't cause them to tap.)

Mountain

Swamp

Manaweft Sliver

Sliver creatures you control have "{T}: Add one mana of any color."

Plains

Striking Sliver

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

Forest

Galerider Sliver

Sliver creatures you control have flying.

Groundshaker Sliver

Sliver creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

Island

Blur Sliver

Sliver creatures you control have haste. (They can attack and {T} as soon as they come under your control.)