Cascade, cascade, cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Multiple instances of cascade each trigger separately.)
10 /
10
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{5}{W}{W}{W}
Avacyn, Angel of Hope
Legendary Creature - Angel
Flying, vigilance, indestructible
Other permanents you control have indestructible.
8 /
8
--
Azorius Guildgate
Land - Gate
Azorius Guildgate enters the battlefield tapped.
{T}: Add {W} or {U}.
{2}
Azorius Signet
Artifact
{1}, {T}: Add {W}{U}.
--
Boros Guildgate
Land - Gate
Boros Guildgate enters the battlefield tapped.
{T}: Add {R} or {W}.
{2}
Boros Signet
Artifact
{1}, {T}: Add {R}{W}.
--
Dimir Guildgate
Land - Gate
Dimir Guildgate enters the battlefield tapped.
{T}: Add {U} or {B}.
{2}
Dimir Signet
Artifact
{1}, {T}: Add {U}{B}.
{5}{W}{W}
Elesh Norn, Grand Cenobite
Legendary Creature - Phyrexian Praetor
Vigilance
Other creatures you control get +2/+2.
Creatures your opponents control get -2/-2.
4 /
7
{13}
Emrakul, the Promised End
Legendary Creature - Eldrazi
This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants
13 /
13
{4}{R}{R}
Etali, Primal Storm
Legendary Creature - Elder Dinosaur
Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.
6 /
6
{1}{G}
Farseek
Sorcery
Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.
--
Gateway Plaza
Land - Gate
Gateway Plaza enters the battlefield tapped.
When Gateway Plaza enters the battlefield, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.
{10}{G}{G}
Ghalta, Primal Hunger
Legendary Creature - Elder Dinosaur
This spell costs {X} less to cast, where X is the total power of creatures you control.
Trample
12 /
12
--
Golgari Guildgate
Land - Gate
Golgari Guildgate enters the battlefield tapped.
{T}: Add {B} or {G}.
{2}
Golgari Signet
Artifact
{1}, {T}: Add {B}{G}.
--
Gruul Guildgate
Land - Gate
Gruul Guildgate enters the battlefield tapped.
{T}: Add {R} or {G}.
{2}
Gruul Signet
Artifact
{1}, {T}: Add {R}{G}.
--
Izzet Guildgate
Land - Gate
Izzet Guildgate enters the battlefield tapped.
{T}: Add {U} or {R}.
{2}
Izzet Signet
Artifact
{1}, {T}: Add {U}{R}.
{8}{U}{U}
Jin-Gitaxias, Core Augur
Legendary Creature - Phyrexian Praetor
Flash
At the beginning of your end step, draw seven cards.
Each opponent's maximum hand size is reduced by seven.
5 /
4
{2}{G}
Kodama's Reach
Sorcery - Arcane
Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
{10}
Kozilek, Butcher of Truth
Legendary Creature - Eldrazi
When you cast this spell, draw four cards.
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Kozilek, Butcher of Truth is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.
12 /
12
{8}{C}{C}
Kozilek, the Great Distortion
Legendary Creature - Eldrazi
When you cast this spell, if you have fewer than seven cards in hand, draw cards equal to the difference.
Menace
Discard a card with mana value X: Counter target spell with mana value X.
12 /
12
{5}{G}{U}{R}
Maelstrom Wanderer
Legendary Creature - Elemental
Creatures you control have haste.
Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.)
7 /
5
--
Maze's End
Land
Maze's End enters the battlefield tapped.
{T}: Add {C}.
{3}, {T}, Return Maze's End 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.
{5}{U}{U}
Nezahal, Primal Tide
Legendary Creature - Elder Dinosaur
This spell can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.
Discard three cards: Exile Nezahal, Primal Tide. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.
7 /
7
--
Orzhov Guildgate
Land - Gate
Orzhov Guildgate enters the battlefield tapped.
{T}: Add {W} or {B}.
{2}
Orzhov Signet
Artifact
{1}, {T}: Add {W}{B}.
{W}{W}{U}{U}{B}{B}{R}{R}{G}{G}
Progenitus
Legendary Creature - Hydra Avatar
Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.
10 /
10
--
Rakdos Guildgate
Land - Gate
Rakdos Guildgate enters the battlefield tapped.
{T}: Add {B} or {R}.
{2}
Rakdos Signet
Artifact
{1}, {T}: Add {B}{R}.
{1}{G}
Rampant Growth
Sorcery
Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
{6}{G}{G}{G}
Reshape the Earth
Sorcery
Search your library for up to ten land cards, put them onto the battlefield tapped, then shuffle.
{R}{R}{W}{W}{W}{B}{B}
Ruinous Ultimatum
Sorcery
Destroy all nonland permanents your opponents control.
--
Selesnya Guildgate
Land - Gate
Selesnya Guildgate enters the battlefield tapped.
{T}: Add {G} or {W}.
{2}
Selesnya Signet
Artifact
{1}, {T}: Add {G}{W}.
{5}{B}{B}
Sheoldred, Whispering One
Legendary Creature - Phyrexian Praetor
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.
At the beginning of each opponent's upkeep, that player sacrifices a creature.
6 /
6
--
Simic Guildgate
Land - Gate
Simic Guildgate enters the battlefield tapped.
{T}: Add {G} or {U}.
{2}
Simic Signet
Artifact
{1}, {T}: Add {G}{U}.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}{B}{B}
Tetzimoc, Primal Death
Legendary Creature - Elder Dinosaur
Deathtouch
{B}, Reveal Tetzimoc, Primal Death from your hand: Put a prey counter on target creature. Activate only during your turn.
When Tetzimoc enters the battlefield, destroy each creature your opponents control with a prey counter on it.
6 /
6
{4}
Thran Dynamo
Artifact
{T}: Add {C}{C}{C}.
{1}{G}
Three Visits
Sorcery
Search your library for a Forest card, put it onto the battlefield, then shuffle.
{10}
Ulamog, the Ceaseless Hunger
Legendary Creature - Eldrazi
When you cast this spell, exile two target permanents.
Indestructible
Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library.
10 /
10
{11}
Ulamog, the Infinite Gyre
Legendary Creature - Eldrazi
When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.
10 /
10
{3}{R}{R}
Urabrask the Hidden
Legendary Creature - Phyrexian Praetor
Creatures you control have haste.
Creatures your opponents control enter the battlefield tapped.
4 /
4
{6}{G}{G}
Vorinclex, Voice of Hunger
Legendary Creature - Phyrexian Praetor
Trample
Whenever you tap a land for mana, add one mana of any type that land produced.
Whenever an opponent taps a land for mana, that land doesn't untap during its controller's next untap step.
7 /
6
{6}{R}{G}{W}
Zacama, Primal Calamity
Legendary Creature - Elder Dinosaur
Vigilance, reach, trample
When Zacama, Primal Calamity enters the battlefield, if you cast it, untap all lands you control.
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.