Mesmeric Sliver

All Slivers have "When this permanent enters, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)

Basal Sliver

All Slivers have "Sacrifice this permanent: Add {B}{B}."

Island

Homing Sliver

Each Sliver card in each player's hand has slivercycling {3}.
Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

Swamp

Screeching Sliver

All Slivers have "{T}: Target player mills a card."

Cleaving Sliver

Winged Sliver

Synchronous Sliver

Crypt Sliver

All Slivers have "{T}: Regenerate target Sliver."

Heart Sliver

Mindlash Sliver

All Slivers have "{1}, Sacrifice this permanent: Each player discards a card."

Clot Sliver

All Slivers have "{2}: Regenerate this permanent."

Blur Sliver

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

Striking Sliver

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

Spitting Sliver

Battering Sliver

Plated Sliver

Bonesplitter Sliver

Two-Headed Sliver

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)