Fungus Sliver

All Sliver creatures have "Whenever this creature is dealt damage, put a +1/+1 counter on it." (It must survive the damage to get the counter.)

Blur Sliver

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

All Slivers have "{2}, Sacrifice this permanent: This permanent deals 2 damage to any target."

As this creature enters, choose a color.
All Slivers have protection from the chosen color.

All Slivers have "{2}, Sacrifice this permanent: You gain 4 life."

Sliver creatures you control have deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)