Combining low-cost loot effects with an untap trigger on every legendary spell cast makes Dimir loot engines incredibly fast and lethal in competitive Commander environments. On Moxfield’s cEDH and high-power leaderboards, Rona, Herald of Invasion from March of the Machine stands as a premier Dimir () commander for instant-speed looting, zero-mana artifact bounce loops, and deterministic storm wins.

As a 1/3 Human Wizard legend costing just two mana (), Rona features a loot ability: tap to draw a card, then discard a card. Crucially, her static ability untaps Rona whenever you cast a legendary spell. Paired with bounce grants like Retraction Helix or Banishing Knack targeting Rona and zero-cost legendary mana artifacts like Mox Amber or Mox Opal, Rona forms a self-contained infinite mana and infinite loot loop as early as Turn 2. Furthermore, her phyrexian transformation into Rona, Tolarian Obliterator (/p) gives her late-game combat resilience and punish mechanics.

Here is the strategic operational blueprint of Moxfield’s premier Rona list, detailing how to execute her primary Retraction Helix loops, draw through the deck, and execute win conditions under counter protection.

1. Core Mechanics & Strategic Phases

Succeeding with Rona, Herald of Invasion requires low-mana artifact acceleration, key bounce-enabling instants, zero-cost legendary artifacts, and fast blue/black counter-magic.

• Early Game (Turns 1–2): Cast turn 1 mana rocks like Sol Ring, Chrome Mox, or Mana Crypt, and deploy Rona () on Turn 1 or 2.

• Mid Game (Turns 2–3): Cast a bounce spell (Retraction Helix or Banishing Knack) targeting Rona. Tap Rona to return Mox Amber to hand, recast Mox Amber, triggering Rona’s untap. Tap Mox Amber for mana, tap Rona to bounce Mox Amber again, generating infinite mana and infinite loot cycles.

• Late Game (Turns 3+): Draw your entire deck via Rona’s infinite loot loop and finish the game with Thassa’s Oracle or Orcish Bowmasters ping loops.

2. Moxfield Highlights: Dimir Bounce Loops & Legendary Synergy

The highest-rated community lists on Moxfield optimize Rona by concentrating on fast tutors, protection spells, and zero-mana legendary pieces.

Retraction Helix / Banishing Knack

The core combo catalysts. Giving Rona the ability to tap and bounce a target nonland permanent allows her to repeatedly return zero-mana legendary artifacts to hand and untap upon re-casting them.

Mox Amber / Mox Opal / Lotus Petal

Infinite mana enablers. Mox Amber taps for blue or black with Rona on the field, providing net positive blue or black mana during every iteration of the bounce loop.

Thassa’s Oracle / Demonic Consultation

Primary win condition. Once infinite loot or infinite mana is generated, casting Thassa’s Oracle with an emptied library guarantees an instant win.

Fierce Guardianship / Force of Will / Pact of Negation

Free interaction suite. Protecting Rona from cheap instant removal while executing the Helix loop ensures high win conversion rates.

3. Copy & Paste Rona, Herald of Invasion 100-Card Decklist

Use the text box below to copy the complete highly-optimized community list. It contains exactly 1 Commander and 99 mainboard cards, calibrated perfectly for an error-free import into Moxfield.

1 Rona, Herald of Invasion

1 An Offer You Can't Refuse
1 Ancient Tomb
1 Arcane Signet
1 Arid Mesa
1 Banishing Knack
1 Bloodstained Mire
1 Boseiju, Who Endures
1 Brainstorm
1 Cabal Ritual
1 Chrome Mox
1 City of Brass
1 Command Tower
1 Consider
1 Covert Technician
1 Culling the Weak
1 Cyclonic Rift
1 Dark Ritual
1 Dauthi Voidwalker
1 Deadly Rollick
1 Demonic Consultation
1 Demonic Tutor
1 Dispel
1 Displace
1 Doomsday
1 Drake Hatcher
1 Dress Down
1 Entomb
1 Exotic Orchard
1 Fabled Passage
1 Fellwar Stone
1 Fierce Guardianship
1 Flooded Strand
1 Flusterstorm
1 Force of Negation
1 Force of Will
1 Gemstone Caverns
1 Gitaxian Probe
1 Imperial Seal
1 Jeweled Lotus
1 Lim-Dûl's Vault
1 Lion's Eye Diamond
1 Lotus Petal
1 Mana Confluence
1 Mana Crypt
1 Mana Drain
1 Mana Vault
1 Marsh Flats
1 Mental Misstep
1 Misdirection
1 Misty Rainforest
1 Morphic Pool
1 Mox Amber
1 Mox Diamond
1 Mox Opal
1 Muddle the Mixture
1 Mystical Tutor
1 Necropotence
1 Orcish Bowmasters
1 Otawara, Soaring City
1 Pact of Negation
1 Phantasmal Image
1 Polluted Delta
1 Ponder
1 Preordain
1 Retraction Helix
1 Rhystic Study
1 Scalding Tarn
1 Scheming Symmetry
1 Sensei's Divining Top
1 Sol Ring
1 Spell Pierce
1 Spellseeker
1 Stern Scolding
1 Submerge
1 Swan Song
1 Tainted Pact
1 Talisman of Dominance
1 Thassa's Oracle
1 Toxic Deluge
1 Underground Sea
1 Underworld Breach
1 Urza's Bauble
1 Urza's Saga
1 Vampiric Tutor
1 Veil of Summer
1 Verdant Catacombs
1 Watery Grave
1 Wishclaw Talisman
1 Wooded Foothills
1 Yawgmoth's Will
8 Island
7 Swamp

Summary: Herald of the Infinite Loop

Moxfield’s top deck builders prioritize Rona, Herald of Invasion because she converts simple 1-mana bounce spells into deterministic infinite mana and loot engines as early as turn two. By leveraging her untap trigger on legendary spells alongside zero-mana artifacts, you draw your entire deck and execute protected win conditions instantly. Copy the flawless 100-card decklist above, initiate the Helix loop, and dominate your next Commander pod.

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