{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.
--
Blood Crypt
Land - Swamp Mountain
({T}: Add {B} or {R}.)
As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Bloodstained Mire
Land
{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.
--
Breeding Pool
Land - Forest Island
({T}: Add {G} or {U}.)
As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Cascading Cataracts
Land
Indestructible
{T}: Add {C}.
{5}, {T}: Add five mana in any combination of colors.
{3}
Chromatic Lantern
Artifact
Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.
{7}
Chromatic Orrery
Legendary Artifact
You may spend mana as though it were mana of any color.
{T}: Add {C}{C}{C}{C}{C}.
{5}, {T}: Draw a card for each color among permanents you control.
{1}
Chromatic Sphere
Artifact
{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.
{1}
Chromatic Star
Artifact
{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.
When Chromatic Star is put into a graveyard from the battlefield, draw a card.
--
City of Brass
Land
Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.
{3}
Cloud Key
Artifact
As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost {1} less to cast.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{1}{U}
Etherium Sculptor
Artifact Creature - Vedalken Artificer
Artifact spells you cast cost {1} less to cast.
1 /
2
--
Eye of Ugin
Legendary Land
Colorless Eldrazi spells you cast cost {2} less to cast.
{7}, {T}: Search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.
--
Flooded Strand
Land
{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.
{3}
Foundry Inspector
Artifact Creature - Construct
Artifact spells you cast cost {1} less to cast.
3 /
2
--
Gemstone Caverns
Legendary Land
If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.
{T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.
--
Godless Shrine
Land - Plains Swamp
({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.
{5}
Golos, Tireless Pilgrim
Legendary Artifact Creature - Scout
When Golos, Tireless Pilgrim enters the battlefield, you may search your library for a land card, put that card onto the battlefield tapped, then shuffle.
{2}{W}{U}{B}{R}{G}: Exile the top three cards of your library. You may play them this turn without paying their mana costs.
3 /
5
--
Hallowed Fountain
Land - Plains Island
({T}: Add {W} or {U}.)
As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{1}{U}{R}
Herald of Kozilek
Creature - Eldrazi Drone
Devoid (This card has no color.)
Colorless spells you cast cost {1} less to cast.
2 /
4
{7}
Karn Liberated
Legendary Planeswalker - Karn
+4: Target player exiles a card from their hand.
-3: Exile target permanent.
-14: Restart the game, leaving in exile all non-Aura permanent cards exiled with Karn Liberated. Then put those cards onto the battlefield under your control.
L:
6
{4}
Karn, the Great Creator
Legendary Planeswalker - Karn
Activated abilities of artifacts your opponents control can't be activated.
+1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.
-2: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.
L:
5
--
Mana Confluence
Land
{T}, Pay 1 life: Add one mana of any color.
--
Marsh Flats
Land
{T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.
--
Misty Rainforest
Land
{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.
--
Overgrown Tomb
Land - Swamp Forest
({T}: Add {B} or {G}.)
As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Polluted Delta
Land
{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
--
Reflecting Pool
Land
{T}: Add one mana of any type that a land you control could produce.
--
Sacred Foundry
Land - Mountain Plains
({T}: Add {R} or {W}.)
As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Sanctum of Ugin
Land
{T}: Add {C}.
Whenever you cast a colorless spell with mana value 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.
--
Scalding Tarn
Land
{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.
{3}
Semblance Anvil
Artifact
Imprint -- When Semblance Anvil enters the battlefield, you may exile a nonland card from your hand.
Spells you cast that share a card type with the exiled card cost {2} less to cast.
--
Steam Vents
Land - Island Mountain
({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Stomping Ground
Land - Mountain Forest
({T}: Add {R} or {G}.)
As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{1}{G}
Sylvan Scrying
Sorcery
Search your library for a land card, reveal it, put it into your hand, then shuffle.
--
Temple Garden
Land - Forest Plains
({T}: Add {G} or {W}.)
As Temple Garden enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{5}
Ugin's Nexus
Legendary Artifact
If a player would begin an extra turn, that player skips that turn instead.
If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.
{6}
Ugin, the Ineffable
Legendary Planeswalker - Ugin
Colorless spells you cast cost {2} less to cast.
+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.
-3: Destroy target permanent that's one or more colors.
L:
4
{8}
Ugin, the Spirit Dragon
Legendary Planeswalker - Ugin
+2: Ugin, the Spirit Dragon deals 3 damage to any target.
-X: Exile each permanent with mana value X or less that's one or more colors.
-10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.
L:
7
--
Urza's Mine
Land - Urza's Mine
{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.
--
Urza's Power Plant
Land - Urza's Power-Plant
{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.
--
Urza's Tower
Land - Urza's Tower
{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.
--
Verdant Catacombs
Land
{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.
--
Watery Grave
Land - Island Swamp
({T}: Add {U} or {B}.)
As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Windswept Heath
Land
{T}, Pay 1 life, Sacrifice Windswept Heath: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.
--
Wooded Foothills
Land
{T}, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.