Swamp

Bonescythe Sliver

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

Predatory Sliver

Megantic Sliver

Blur Sliver

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

Forest

Manaweft Sliver

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

Temple of Triumph

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
{T}: Add {R} or {W}.

Shimmering Grotto

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Dimir Guildgate

This land enters tapped.
{T}: Add {U} or {B}.

Sentinel Sliver

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

Hive Stirrings

Create two 1/1 colorless Sliver creature tokens.

Temple of Silence

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
{T}: Add {W} or {B}.

Thorncaster Sliver

Sliver creatures you control have "Whenever this creature attacks, it deals 1 damage to any target."

Selesnya Guildgate

This land enters tapped.
{T}: Add {G} or {W}.

Mutavault

{T}: Add {C}.
{1}: This land becomes a 2/2 creature with all creature types until end of turn. It's still a land.

Gruul Guildgate

This land enters tapped.
{T}: Add {R} or {G}.

Cleaving Sliver

Door of Destinies

As this artifact enters, choose a creature type.
Whenever you cast a spell of the chosen type, put a charge counter on this artifact.
Creatures you control of the chosen type get +1/+1 for each charge counter on this artifact.

Lay of the Land

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Battle Sliver

Striking Sliver

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

Island

Mountain

Plains

Syphon Sliver

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