Have

Winged Sliver

Predatory Sliver

Virulent Sliver

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.)

Sidewinder Sliver

All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)

Gemhide Sliver

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

Hallow

Prevent all damage target spell would deal this turn. You gain life equal to the damage prevented this way.

Striking Sliver

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

Heart Sliver

Quick Sliver

Flash
Any player may cast Sliver spells as though they had flash.

Abundant Growth

Enchant land
When this Aura enters, draw a card.
Enchanted land has "{T}: Add one mana of any color."

Winding Way

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.

Muscle Sliver

Crypt Sliver

All Slivers have "{T}: Regenerate target Sliver."

Sinew Sliver

Forest

Plated Sliver

Thriving Grove

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

Plains

Hunter Sliver

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

Nihil Spellbomb

{T}, Sacrifice this artifact: Exile target player's graveyard.
When this artifact is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

Getting

Lead the Stampede

Look at the top five cards of your library. You may reveal any number of creature cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in any order.

Sentinel Sliver

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

Horned Sliver

Stave Off

Target creature gains protection from the color of your choice until end of turn.