“This Colorless Prison/Ramp deck uses fast mana from Ancient Tomb and Grim Monolith to deploy early lock pieces like Trinisphere, while Karn, the Great Creator tutors silver bullets from the sideboard and The One Ring provides card advantage and protection. Urza's Saga assembles key artifacts and finds Candelabra of Tawnos to untap Urza's Tron lands, enabling explosive mana to deploy game-ending threats like Emrakul, the Aeons Torn or Ugin, Eye of the Storms. The deck wins by either locking the opponent out of the game entirely or overwhelming them with uncounterable, reality-warping threats that are impossible to answer through the established prison pieces.”
Missing sideboard cards? The full 15-card sideboard runs about $457.
Buy sideboard on ManapoolOcelot Pride Midrange goes wide with small Cat tokens, making Ensnaring Bridge excellent once we have fewer cards in hand to shut down their swarm. Dismember answers Ajani, Nacatl Pariah or Guide of Souls cheaply even with limited black sources since it can be paid with life. Mycosynth Lattice makes every permanent an artifact, so with Karn, the Great Creator out it shuts off the activated abilities of their Wasteland, Karakas and fetchlands, and it also lets us spend mana as though it were any color, though it's a situational one-of. Giant's Boulder and Sink into Stupor are too passive against a deck that curves out and applies pressure with Swords to Plowshares backup.
Dimir Tempo pressures with Nethergoyf and Moonshadow while backing up with Thoughtseize, Daze, and Force of Will. Extra Force of Negation copies let us answer their noncreature spells, such as Thoughtseize, Fatal Push, Snuff Out, and Kaito, for free on their turn and protect our own game plan. Force of Negation can't hit their creature spells, so we rely on Force of Will and Kozilek's Command for those. Tormod's Crypt shrinks Nethergoyf by emptying their graveyard and denies its escape ability. Giant's Boulder is too slow against their efficient curve, and the second Expedition Map is cuttable since our manabase is already consistent. Keep Karn and The One Ring as our primary engines to out-value their disruption-heavy shell over a longer game.
Sultai Aluren wants to resolve Show and Tell into Omniscience or cheat in Atraxa, Grand Unifier and Emrakul, the Aeons Torn, so the extra Force of Negation copies let us pitch a blue card to counter their payoff spells for free even when tapped out. Ensnaring Bridge is largely dead against their huge single threats but can still buy time versus an early Acererak the Archlich attack trigger making tokens. Giant's Boulder's slow mana ramp is outclassed by their much faster Show and Tell plan, and a second Expedition Map is replaceable since our Tron lands are already redundant. Keep Karn and The One Ring in to find silver bullets and stabilize once we're past their early turns.