Sliver Hivelord

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

Syphon Sliver

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

Sliver creatures you control have flying and haste.

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

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.