All Sliver creatures have trample.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

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

Search your library for a card, put that card into your hand, then shuffle.

Whenever a Sliver deals damage, its controller gains that much life.

All Sliver creatures have frenzy 1. (Whenever a Sliver attacks and isn't blocked, it gets +1/+0 until end of turn.)

({T}: Add {W} or {B}.)

As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Creatures you control are Slivers in addition to their other creature types.

Changeling (This card is every creature type.)

When Irregular Cohort enters the battlefield, create a 2/2 colorless Shapeshifter creature token with changeling.

All Slivers have "{1}, Sacrifice this permanent: Each player discards a card."

You may cast Necromancy as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

When Necromancy enters the battlefield, if it's on the battlefield, it becomes an Aura with "enchant creature put onto the battlefield with Necromancy." Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it. When Necromancy leaves the battlefield, that creature's controller sacrifices it.

All Sliver creatures have flying.

All Slivers have "If this permanent would be put into a graveyard, you may put it on top of its owner's library instead."

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

Sliver creatures you control have "Whenever this creature attacks, it deals 1 damage to any target."