Spooky20

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

All Sliver creatures have haste.

All Sliver creatures have "{2}: This creature gets +1/+1 until end of turn."

All Sliver creatures have "{2}: This creature gets +0/+1 until end of turn."

Vivid Grove enters the battlefield tapped with two charge counters on it. {T}: Add {G}. {T}, Remove a charge counter from Vivid Grove: Add one mana...

Vivid Creek enters the battlefield tapped with two charge counters on it. {T}: Add {U}. {T}, Remove a charge counter from Vivid Creek: Add one mana...

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

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Rupture Spire enters the battlefield tapped. When Rupture Spire enters the battlefield, sacrifice it unless you pay {1}. {T}: Add one mana of any c...

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest. {T}: Add {R} or {G}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

Whenever a creature enters the battlefield, if you cast it from your hand, you may search your library for a creature card with the same total powe...

Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, re...

All Sliver creatures have "{2}: This creature gets +1/+0 until end of turn."

All Slivers have "{2}: Regenerate this permanent."

All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

All Slivers have shroud. (They can't be the targets of spells or abilities.)