Scuttling Sliver

Sliver creatures you control have "{2}: Untap this creature."

Galerider Sliver

Sliver creatures you control have flying.

Winged Sliver

Synchronous Sliver

Screeching Sliver

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

Mnemonic Sliver

All Slivers have "{2}, Sacrifice this permanent: Draw a card."

Shifting Sliver

Slivers can't be blocked except by Slivers.

Orvar, the All-Form

Changeling
Whenever you cast an instant or sorcery spell, if it targets one or more other permanents you control, create a token that's a copy of one of those permanents.
When a spell or ability an opponent controls causes you to discard this card, create a token that's a copy of target permanent.

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.)

Telekinetic Sliver

All Slivers have "{T}: Tap target permanent."

Taunting Sliver

Sliver creatures you control have "When this creature enters, goad target creature an opponent controls." (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Synapse Sliver

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

Diffusion Sliver

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}.