The official Eldrazi Incursion preconstructed deck from Modern Horizons 3 is one of the most powerful and mechanically unique precons ever printed. While traditionally Eldrazi decks are locked into strict Colorless restriction, this deck features the ultimate hybrid five-color engine led by Ulalek, Fused Atrocity.
Ulalek is an absolute nightmare for opponents because it manipulates the stack directly:
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The Ability: Whenever you cast an Eldrazi spell, you may pay (two colorless mana). If you do, you copy all spells you control, then copy all other activated and triggered abilities you control.
In this PreconForge Guide, we will use the precise list directly from the official deck release, remove the clunky sub-themes that slow down your game plan, and show you how to turn Ulalek into a cosmic copying loop that can duplicate massive titans, tokens, and abilities infinitely.
The Strategy: Mastering the „Hold Priority“ Trick
Out of the box, the deck contains high-tier powerhouses like All Is Dust, Forsaken Monument, and the incredible enchantment Eldrazi Conscription. However, because it is a precon, it mixes two separate themes: the big-spell copying engine of Ulalek, and the low-to-the-ground Eldrazi Spawn/Scion sacrifice strategy led by the secondary commander, Azlask, the Swelling Scourge.
To maximize Ulalek, Fused Atrocity, we need to fully commit to casting Eldrazi spells and holding up colorless mana. The ultimate trick with Ulalek relies on Instant-speed Eldrazi spells. If you cast a massive Eldrazi creature spell, hold priority, and cast an Eldrazi instant (like the precon’s built-in Eldritch Immunity or Warping Wail) in response, Ulalek triggers twice! Paying the colorless costs for both triggers allows you to create an avalanche of copies that completely fills the stack.
Top 5 Cards to Cut from the Official Precon
To streamline the deck and provide enough explosive mana generation for your copying loops, remove these five lower-synergy pieces from the official box:
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Azlask, the Swelling Scourge: While fantastic as a standalone commander, in the 99 of an Ulalek deck, Azlask’s experience counter sub-theme requires too many specific creature deaths to yield consistent value.
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Mutated Cultist: A highly conditional creature designed to steal counters from permanents. If your opponents aren’t playing planeswalkers or +1/+1 counters, this is just a vanilla body that doesn’t feed your primary copying strategy.
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Imprisoned in the Moon: A solid blue aura removal spell included in the default deck. However, it is not an Eldrazi spell, meaning casting it will never trigger your commander’s copying potential.
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Twins of Discord: A new card from the precon that dictates combat restrictions based on odd and even mana values. It’s a fun casual card, but it doesn’t give you any stack or copy synergy.
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Temple of Malady (and Temple of Silence): These tapped dual lands are a major liability in a five-color deck where hitting untapped colorless and colored mana on curve is absolutely mandatory.
Budget Upgrades (Under $3 per card)
These affordable additions will give you more instant-speed options, cheap cast triggers, and repeatable token fuel.
Flash Enablers & Instant-Speed Tricks
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Skittering Cicada: The absolute best budget card for this deck. It gives all of your colorless spells Flash and grows larger for each colorless permanent you control. With this out, you can cast any Eldrazi creature on an opponent’s turn to copy everything on your stack.
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Not of This World: A tribal Eldrazi instant that costs 7 mana but is frequently completely free to cast if you control a creature with power 7 or greater. Because it is an Eldrazi spell, casting it for 0 mana will still trigger Ulalek to copy your entire stack!
Cheap Triggers & Card Draw
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Nulldrifter: A brilliant inclusion from the main Modern Horizons 3 set. You can cast it for its Evoke cost of just 3 mana to draw 2 cards. Since it’s an Eldrazi spell, you can pay Ulalek’s cost to copy the spell and the draw triggers before it gets sacrificed.
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Glancedeye Protector: Provides cheap Eldrazi cast triggers while stripping problematic cards directly out of your opponents‘ hands.
Premium Upgrades (The Great Distortion)
If you are ready to invest extra resources at the forge to unlock catastrophic, game-ending power, look out for these elite premier upgrades:
The Apex Copy Engines
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Echoes of Eternity: A mandatory premium inclusion from the main Modern Horizons 3 set. It acts as a permanent multiplier, duplicating every single colorless spell you cast and every colorless triggered ability you control. Paired with Ulalek, a single cast will create so many stack iterations that your opponents will immediately scoop.
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Zhulodok, Void Gorger: Gives all your spells with a mana value of 7 or greater Double Cascade. When you order your triggers so that Cascade resolves first, you can cast the hit spells, trigger Ulalek, and copy the cascaded spells alongside the original 7+ mana titan.
The Eldrazi Titans
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Kozilek, the Great Distortion: When you cast Kozilek and use Ulalek to copy him, you don’t just get a massive menace threat—you copy his cast trigger, allowing you to refill your entire hand to 7 cards twice over.
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Ulamog, the Ceaseless Hunger: Copying Ulamog’s cast trigger with Ulalek allows you to exile four target permanents before the creatures even resolve onto the battlefield, breaking your opponents‘ boards beyond repair.
PreconForge Verdict: Is it worth it?
The official Eldrazi Incursion preconstructed deck is an incredible product out of the box, but focusing fully on Ulalek, Fused Atrocity elevates it into a high-tier competitive threat. By shifting away from the passive token-sacrifice plan, optimizing your mana base for untapped colorless sources, and adding instant-speed flash enablers, you turn your deck into a localized stack apocalypse.
Stoke the fires of the forge, shatter the boundaries of the stack, and let us know in the comments below how many titans you managed to clone in a single turn!
Are you keeping your Eldrazi build strictly restricted to the new devoid elements from Modern Horizons 3, or are you introducing the old-school original titans to completely annihilate the table? Let’s keep the strategy discussion moving forward!
