All Sliver creatures get +1/+1.

This land enters tapped. As it enters, choose a color other than green. {T}: Add {G} or one mana of the chosen color.

All Sliver creatures have provoke. (Whenever a Sliver attacks, its controller may have target creature defending player controls untap and block it if able.)

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.

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

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

All Sliver creatures get +1/+1.

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.)

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