All Sliver creatures get +1/+1.

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

Choose creature or land. Reveal the top four cards of your library. Put all cards of the chosen type revealed this way into your hand and the rest into your graveyard.

All Sliver creatures get +1/+1.

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

All Slivers have "{T}: Add one mana of any color."

All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or more poison counters loses the game.)

Changeling (This card is every creature type.) When this creature enters, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

({T}: Add {W}.)