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Commander primer

Hearthhull, the Worldseed

Your lands are ammunition: sacrifice them for cards and drain, then flood them all back for one enormous landfall turn.

midrange B3 Upgraded Archidekt ↗

Overview

Hearthhull is a payment terminal. It doesn't ramp you, doesn't draw on its own timer, and doesn't attack until very late — what it does is put a price tag on an action this deck was already taking sixty times a game. You sacrifice lands constantly here: as costs (Crop Rotation, Harrow, Constant Mists' buyback), as fixing (Squandered Resources), as a fetchland's own text, as a free outlet (Zuran Orb, Sylvan Safekeeper). Each one now bills the table 2 life.

Note what it is: a Legendary Artifact — Spacecraft, not a creature. Until it has 8 charge counters, creature removal and board wipes don't see it, and the drain keeps running through a Wrath that eats everyone's board including yours. That's why the free spells work so reliably here — Deadly Rollick and Deflecting Swat cost nothing while you control a commander, and this commander is the one kind that survives the sweeper that made you want to cast them.

The deck runs three gears and you take the one the game hands you:

None of these is the "real" plan. They share the same fuel — lands entering, lands dying, lands coming back — so whichever payoff is on the battlefield is the correct one. Assemble the mana engine first and let the board tell you which line closes.

Green is 71% of your pip demand on 42% of your sources. Black and red are heavily over-sourced by comparison — the second green source matters far more than a second black one.

Mulligan Guide

The keep question is "can you start the land engine, and is something waiting to be paid?"

Keep a hand that has all three:

  1. A green source. Two is materially better than one; nearly every engine piece is -heavy and your BR sources can't cast them.
  2. A one-to-three-mana engine piece — Exploration, Azusa, Dryad of the Ilysian Grove, Lotus Cobra, Icetill Explorer, Aftermath Analyst, or a Nature's Lore / Three Visits / Farseek to get there.
  3. Something that cashes it in — a landfall payoff, a sac outlet, or Hearthhull-plus-four-lands so the drain is live.

Snap-keep any hand with an extra-land-drop effect plus a way to fetch or return lands. Two land drops a turn with Lotus Cobra out is how the busted starts happen.

Mulligan hands that are all lands with no engine (you have 40 lands — you will find more), hands that are all payoffs with one green source, and hands whose only action costs five. Sol Ring is not a keep by itself here; the deck's acceleration is land-based and a rock doesn't advance any of it.

Hearthhull being in the command zone doesn't change the bar. It costs four and does nothing until you're already sacrificing lands — treat it as the second thing you deploy, not the first.

Game Plan

Turns 1–3 — build the platform. Lead on green. Play the extra-land effect (Exploration, Azusa, Dryad, Icetill Explorer, Oracle of Mul Daya) before the payoff — the payoff is worth more when you can trigger it twice a turn. Nature's Lore, Three Visits, and Skyshroud Claim search for Forest cards, which in this list means Bayou, Taiga, Overgrown Tomb, Stomping Ground, Commercial District, Underground Mortuary, and Ziatora's Proving Ground — take a real dual over a basic every time, and prefer the ones that don't enter tapped (a land's own "enters tapped" clause still applies even though the spell doesn't say tapped). Farseek reaches everything with a Swamp or Mountain type — the shocks, the surveil lands, Badlands — but always tapped. If you have Lotus Cobra, sequence your fetchlands after it resolves — every crack is a mana of any color plus, once Hearthhull is out, 2 to each opponent.

Turns 3–5 — deploy Hearthhull and start billing. Cast it and start Stationing. Anything with power works: a Moloid, a Zombie, a Beast, a 5/5 Elemental. You want 2 counters fast — that turns Hearthhull into a repeatable ", , sacrifice a land: draw two cards, play an extra land," which with a land-return effect in the deck is pure profit. It has no summoning sickness concern for that activation — it isn't a creature at 2–7 counters.

Note the sequencing on the level-2 ability: it gives you the extra land drop, so activate it before you've used your drops for the turn, not after, and it stacks with Exploration/Azusa/Icetill effects (confirmed by ruling).

Turns 5+ — the payoff turn. You are looking for one of these to be true:

The burst turn generally looks like: fill the graveyard with lands (Nahiri's Lithoforming, Scapeshift, fetches, Icetill/Six mill), then return them all at once with a payoff already down. Each returning land is a separate landfall trigger for every payoff you control.

Interaction is cheap and you should hold it. Assassin's Trophy, Putrefy, and Tear Asunder answer anything; Deadly Rollick and Deflecting Swat are free while Hearthhull is on the battlefield. Heroic Intervention protects the whole board through a wrath. Constant Mists is a repeatable fog that charges you nothing you weren't already spending — the land it eats is a Hearthhull trigger and a Titania token.

How Hearthhull actually works

Key Loops & Interactions

Aftermath Analyst recursion — the deck's engine. Analyst sacrifices itself for to return all land cards from your graveyard to the battlefield. Three cards let you do it more than once:

Each Analyst cycle is: mill three → return every land in the yard → one landfall trigger per land for every payoff you control. With Amulet of Vigor those lands untap; with Horizon Explorer they never enter tapped in the first place (its ruling covers exactly this — a land "simply put onto the battlefield tapped" enters untapped instead), which means a mass return is immediately mana-positive.

Titania plus any free sac outlet. Zuran Orb and Squandered Resources cost nothing to activate. With Titania out, every land you sacrifice is a 5/3 Elemental and 2 drain and a Mazirek counter on your team. Zuran Orb with a graveyard full of returnable lands is a genuine win condition, not a life-gain card.

Landfall doublers, precisely. Ancient Greenwarden and Traveling Chocobo each make a land entering trigger your permanents' abilities one additional time. Together they give you three triggers per land, not four — this is explicitly ruled on both cards. They double landfall (Scute Swarm, Omnath, Baloths, Sabotender, Ob Nixilis, Retreat to Hagra, Tireless Provisioner, Field of the Dead, Mole Man, Icetill Explorer) and Valakut. They do not double Hearthhull's drain or Titania's tokens — those trigger on sacrifice and on lands dying, not on lands entering.

Valakut, switched on. Prismatic Omen or Dryad of the Ilysian Grove makes every land you control a Mountain. Valakut then reads "whenever a land enters, deal 3" as long as you control five other lands. A Splendid Reclamation returning six lands with Omen out is 18 damage spread as you like — and with Greenwarden, 36.

Scute Swarm past six lands copies itself on each landfall. With a doubler and a mass land return, the count goes exponential inside one turn; be ready to actually track it, and decide before you start whether you need the board or just need to attack.

Field of the Dead counts names, not lands. Your eight Forests count as one name. Scapeshift is the card that turns it on properly (fetch differently-named lands); the basic-fetching spells — Entish Restoration, Planar Engineering, Cycle of Renewal, Roiling Regrowth, Harrow — mostly add duplicate Forests and don't advance the count. Your fetchlands, duals, shocks, surveil lands, Urborg, and Yavimaya are all distinct names, so the threshold is reachable — just not by shuffling in basics.

The Gitrog Monster is a draw engine with a bill. Its upkeep sacrifice is a Hearthhull trigger you get for free. It draws whenever one or more land cards hit your graveyard from anywhere — but only once per event, so a mill that bins three lands draws one card, not three. Icetill Explorer's landfall mill, Six's attack mill, and the surveil lands all feed it a card at a time.

Life from the Loam dredges back the lands your engine burns. Ancient Greenwarden, Icetill Explorer, Mole Man, Szarel, Conduit of Worlds, and Exploration Broodship all let you play lands straight from the graveyard, so Loam is often unnecessary — dredge it when you need lands in hand for Worldsoul's Rage or Six's retrace cost.

Korvold, Mazirek, and Szarel are the sacrifice payoffs. Korvold draws and grows on every sacrifice, including the fetchland you cracked. Mazirek pumps the entire board every time any player sacrifices anything. Szarel dumps its power in +1/+1 counters onto another creature whenever you sacrifice a nontoken permanent on your turn — a land counts, so it grows a threat every time the engine fires. Mayhem Devil turns each sacrifice into a ping at any target, including creatures.

The land base is part of the engine, not just mana. Five effects sacrifice themselves — Bloodstained Mire, Verdant Catacombs, Wooded Foothills, Prismatic Vista, and Fabled Passage. Each is a drain trigger, a Titania token, a Korvold/Szarel/Mazirek trigger, a Gitrog draw, a Lotus Cobra mana, and a landfall trigger, all for one life. Crack them for value even when the fixing is irrelevant, and crack them after the payoff is on the battlefield. Fabled Passage untaps the fetched land once you control four or more lands, so it's the one you can crack on the turn you need the mana. The three surveil lands (Commercial District, Raucous Theater, Underground Mortuary) quietly fill the graveyard that Splendid Reclamation and Aftermath Analyst cash in.

The modal double-faced cards are free flexibility. Agadeem's Awakening, Bala Ged Recovery, Valakut Awakening, and Malakir Rebirth are lands when the hand is short and spells when it isn't — and every one of them is a distinct name for Field of the Dead. Agadeem's Awakening is a genuine payoff rather than filler: this deck mills itself constantly (Icetill Explorer, Six, Aftermath Analyst, Lumra, the surveil lands), so a late Awakening for X=3 or 4 rebuys a spread of engine creatures at once. Bala Ged Recovery buys back the mass land return you already used. Boseiju is a green source that answers an artifact, enchantment, or nonbasic land from your hand via channel — discarding it is not a land sacrifice, so it doesn't drain, and it gets cheaper for each legendary creature you control.

Free spells run off the commander's presence. Deadly Rollick and Deflecting Swat check that you control a commander. Hearthhull on the battlefield satisfies that and, below 8 counters, is nearly impossible for opponents to remove — so unlike most decks, you can plan around these actually being free.

Larval Scoutlander's choice matters. Its ETB sacrifices "a land or a Lander." Sacrifice a land when you want the drain and the graveyard fuel; sacrifice a Lander token (from Horizon Explorer's attack trigger) when you want to keep the land on the battlefield. Landers are artifacts, not lands — sacrificing one is not a Hearthhull trigger.

Famished Worldsire's devour land sacrifices any number of lands as it enters — every one of them is a drain trigger, a Titania token, and graveyard fuel — and then it looks at the top X cards where X is its (now enormous) power and puts every land it finds onto the battlefield. It is simultaneously your biggest Station payment and a mass landfall event.

Common Pitfalls