Sacrifice a creature: Add {C}{C}.

{T}: Add one mana of any color that a land an opponent controls could produce.

All Slivers have "Sacrifice this permanent: Add {B}{B}."

Flying {T}: Add one mana of any color.

Sliver creatures you control have flying and haste.

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

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

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {B}, {R}, or {G}.

Haste {T}: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

Sliver creatures you control have "{T}: Add one mana of any color."

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U}.

Creatures don't untap during their controllers' untap steps. Whenever a creature enters the battlefield, untap all creatures.

Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.