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

All Slivers have "When this permanent enters, destroy target artifact or enchantment."

Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

All Sliver creatures have trample.

Sliver creatures you control have "When this creature enters, it deals 1 damage to target player or planeswalker and you gain 1 life."

All Slivers have "{3}, Sacrifice this permanent: Destroy target permanent."

All Sliver creatures have "This creature gets +1/+1 as long as you control a Swamp." All Slivers have "{B}: Regenerate this permanent." (The next time it would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Sliver creatures you control have "Whenever this creature is dealt damage, it deals that much damage to target player or planeswalker."

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

Whenever a creature you control attacks, put a charge counter on this enchantment. Remove a charge counter from this enchantment: Add one mana of any color.

Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.

Destroy target permanent an opponent controls. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Exile target permanent with mana value 4 or greater.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

({T}: Add {B} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {G} or {U}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {W} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {W} or {U}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {B} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {R} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {R} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Changeling (This card is every creature type.) As Morophon enters, choose a creature type. Spells of the chosen type you cast cost {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay. Other creatures you control of the chosen type get +1/+1.

The "legend rule" doesn't apply to Slivers you control. Each Sliver creature card in your graveyard has encore {X}, where X is its mana value. Encore {5} ({5}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

{3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle. {3}: Gain control of target Sliver. (This effect lasts indefinitely.)

Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

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

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Return any number of permanent cards with different names from your graveyard to the battlefield.

{T}: Add one mana of any color in your commander's color identity.

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

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {R}.)

({T}: Add {W}.)

Sliver creatures you control have flying.

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

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."

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

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

If you control a commander, you may cast this spell without paying its mana cost. Creatures you control gain indestructible until end of turn.

Permanents you control gain hexproof and indestructible until end of turn.

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Whenever this land becomes tapped, it deals 1 damage to you. {T}: Add one mana of any color.

{T}: Add one mana of any color in your commander's color identity.

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

{T}: Add one mana of any color. Whenever you tap this land for mana, target opponent creates a 1/1 colorless Spirit creature token.

At the beginning of the end step, if you control no artifacts, sacrifice this land. {T}: Add one mana of any color.

{T}, Pay 1 life: Add one mana of any color.

{T}: Add one mana of any type that a land you control could produce.

{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Sliver spell. {5}, {T}: Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.

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."

All Sliver creatures have haste.

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

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

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

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

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Suspend 4—{U} (Rather than cast this card from your hand, pay {U} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) Target player draws three cards.

Suspend 3—{0} (Rather than cast this card from your hand, pay {0} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) {T}: Add one mana of any color.

Enchant Forest As this Aura enters, choose a color. Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.