Might Sliver

Path of Ancestry

This land enters tapped.
{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Bonesplitter Sliver

Command Tower

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

Mortify

Creosote Heath

This land enters tapped.
When this land enters, it deals 1 damage to target opponent.
{T}: Add {G} or {W}.

Shadow Sliver

All Sliver creatures have shadow. (They can block or be blocked by only creatures with shadow.)

Herald's Horn

As this artifact enters, choose a creature type.
Creature spells you cast of the chosen type cost {1} less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

Quick Sliver

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

Pillar of Origins

As this artifact enters, choose a creature type.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Spinneret Sliver

Selesnya Guildgate

This land enters tapped.
{T}: Add {G} or {W}.

Gond Gate

Gates you control enter untapped.
{T}: Add {C}.
{T}: Add one mana of any color that a Gate you control could produce.

Sinew Sliver

Arcane Sanctum

This land enters tapped.
{T}: Add {W}, {U}, or {B}.

Azorius Guildgate

This land enters tapped.
{T}: Add {W} or {U}.

Arcane Signet

Crystalline Sliver

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

Manaweft Sliver

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

Sentinel Sliver

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

Blossoming Sands

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {G} or {W}.

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Void Rend

This spell can't be countered.
Destroy target nonland permanent.

Spined Sliver

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

Diffusion Sliver

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}.

Swiftfoot Boots

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.)
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Exotic Orchard

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

Fellwar Stone

Dimir Guildgate

This land enters tapped.
{T}: Add {U} or {B}.

Vanquisher's Banner

As this artifact enters, choose a creature type.
Creatures you control of the chosen type get +1/+1.
Whenever you cast a creature spell of the chosen type, draw a card.

Harmonic Sliver

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

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Hibernation Sliver

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

Gemhide Sliver

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

Sliver Hivelord

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

Venom Sliver

Sliver creatures you control have deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)

Baldur's Gate

{T}: Add {C}.
{2}, {T}: Add X mana of any one color, where X is the number of other Gates you control.

Essence Sliver

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

Seaside Citadel

This land enters tapped.
{T}: Add {G}, {W}, or {U}.

Savage Lands

This land enters tapped.
{T}: Add {B}, {R}, or {G}.

Nomad Outpost

This land enters tapped.
{T}: Add {R}, {W}, or {B}.

Blade Sliver

Spelunking

When this enchantment enters, draw a card, then you may put a land card from your hand onto the battlefield. If you put a Cave onto the battlefield this way, you gain 4 life.
Lands you control enter untapped.

Black Dragon Gate

This land enters tapped.
As this land enters, choose a color other than black.
{T}: Add {B} or one mana of the chosen color.

Belligerent Sliver

Sliver creatures you control have menace. (They can't be blocked except by two or more creatures.)

Prismatic Omen

Lands you control are every basic land type in addition to their other types.

Taunting Sliver

Sliver creatures you control have "When this creature enters, goad target creature an opponent controls." (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Cleaving Sliver

Sol Ring

Opulent Palace

This land enters tapped.
{T}: Add {B}, {G}, or {U}.

Orzhov Guildgate

This land enters tapped.
{T}: Add {W} or {B}.

Crumbling Necropolis

This land enters tapped.
{T}: Add {U}, {B}, or {R}.

Horned Sliver

Shifting Sliver

Slivers can't be blocked except by Slivers.

Overgrown Farmland

This land enters tapped unless you control two or more other lands.
{T}: Add {G} or {W}.

Unclaimed Territory

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.

Galerider Sliver

Sliver creatures you control have flying.

Plaza of Harmony

When this land enters, if you control two or more Gates, you gain 3 life.
{T}: Add {C}.
{T}: Add one mana of any type that a Gate you control could produce.

Boros Guildgate

This land enters tapped.
{T}: Add {R} or {W}.

Winged Sliver

Gruul Guildgate

This land enters tapped.
{T}: Add {R} or {G}.

Patchwork Banner

As this artifact enters, choose a creature type.
Creatures you control of the chosen type get +1/+1.
{T}: Add one mana of any color.

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.)

Manor Gate

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

Secluded Courtyard

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 or activate an ability of a creature source of the chosen type.

Cliffgate

This land enters tapped.
As this land enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Constricting Sliver

Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield."

Coastal Piracy

Whenever a creature you control deals combat damage to an opponent, you may draw a card.

Realmwalker

Changeling (This card is every creature type.)
As this creature enters, choose a creature type.
You may look at the top card of your library any time.
You may cast creature spells of the chosen type from the top of your library.

Striking Sliver

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

Leeching Sliver

Whenever a Sliver you control attacks, defending player loses 1 life.

Eerie Ultimatum

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

Maze's End

This land enters tapped.
{T}: Add {C}.
{3}, {T}, Return this land to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

Mystic Monastery

This land enters tapped.
{T}: Add {U}, {R}, or {W}.

Blur Sliver

Sliver creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Izzet Guildgate

This land enters tapped.
{T}: Add {U} or {R}.

Expedition Map

{2}, {T}, Sacrifice this artifact: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Clot Sliver

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

Root Sliver

This spell can't be countered.
Sliver spells can't be countered.

Descendants' Path

At the beginning of your upkeep, reveal the top card of your library. If it's a creature card that shares a creature type with a creature you control, you may cast it without paying its mana cost. If you don't cast it, put it on the bottom of your library.

Jungle Shrine

This land enters tapped.
{T}: Add {R}, {G}, or {W}.

Rakdos Guildgate

This land enters tapped.
{T}: Add {B} or {R}.

Simic Guildgate

This land enters tapped.
{T}: Add {G} or {U}.

Lavabelly Sliver

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

Crypt Sliver

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

Sandsteppe Citadel

This land enters tapped.
{T}: Add {W}, {B}, or {G}.

Cloudshredder Sliver

Sliver creatures you control have flying and haste.

Citadel Gate

This land enters tapped.
As this land enters, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

Circuitous Route

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

Battering Sliver

Two-Headed Sliver

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)

Bonescythe Sliver

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

Sea Gate

This land enters tapped.
As this land enters, choose a color other than blue.
{T}: Add {U} or one mana of the chosen color.

Chromatic Lantern

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

Golgari Guildgate

This land enters tapped.
{T}: Add {B} or {G}.

Syphon Sliver

Sliver creatures you control have lifelink. (Damage dealt by a Sliver creature you control also causes you to gain that much life.)