New Untitled Deck by Repactt

Format: Commander

Commander: Marvo, Deep Operative

Bracket: 4

DeckCheck Threat Index: 31

Deck overview

This deck is a high-cost cheat and sea-monster stompy strategy centered on Marvo, Deep Operative. It operates by curving out with early mana rocks, deploying Marvo on Turn 4, and attacking on Turn 5. By leveraging a high average mana value alongside topdeck manipulation like Sensei's Divining Top, Scroll Rack, and Aqueous Form, Marvo reliably wins clashes to draw cards and cast massive 6- to 8-CMC bombs from hand for free. Cheated threats like Hullbreaker Horror, Spawning Kraken, Kiora Bests the Sea God, and Shard of the Nightbringer generate immediate board dominance. The deck clears blockers using tribal-asymmetric sweepers such as Whelming Wave and Summon: Leviathan, protecting its board with efficient countermagic like Fierce Guardianship and Mana Drain. It steadily closes games through overwhelming combat damage across multiple attack steps.

Decklist (100 cards)

  • 1 Ancient Tomb
  • 1 Aqueous Form
  • 1 Arcane Signet
  • 1 Archetype of Imagination
  • 1 Armaggon, Future Shark
  • 1 Baneful Omen
  • 1 Benthic Anomaly
  • 1 Blatant Thievery
  • 1 Brinelin, the Moon Kraken
  • 1 Broken Ambitions
  • 1 Cavern of Souls
  • 1 Clearwater Pathway // Murkwater Pathway
  • 1 Command Tower
  • 1 Consecrated Sphinx
  • 1 Counterspell
  • 1 Crabomination
  • 1 Crashing Drawbridge
  • 1 Cyclonic Rift
  • 1 Dark Ritual
  • 1 Deadly Rollick
  • 1 Deep-Sea Kraken
  • 1 Eluge, the Shoreless Sea
  • 1 Feed the Swarm
  • 1 Fierce Guardianship
  • 1 Grave Betrayal
  • 1 Gyruda, Doom of Depths
  • 1 High Tide
  • 1 Hoarder's Greed
  • 1 Hullbreaker Horror
  • 21 Island
  • 1 Jet Medallion
  • 1 Kiora Bests the Sea God
  • 1 Malakir Rebirth // Malakir Mire
  • 1 Mana Drain
  • 1 Marvo, Deep Operative
  • 1 Mental Misstep
  • 1 Mind's Dilation
  • 1 Mindleech Mass
  • 1 Nezahal, Primal Tide
  • 1 Omni-Changeling
  • 1 One with the Multiverse
  • 1 Otawara, Soaring City
  • 1 Polluted Delta
  • 1 Preordain
  • 1 Reanimate
  • 1 Research the Deep
  • 1 Rhystic Study
  • 1 Roaming Throne
  • 1 Runo Stromkirk // Krothuss, Lord of the Deep
  • 1 Sapphire Medallion
  • 1 Scattering Stroke
  • 1 Scroll Rack
  • 1 Sensei's Divining Top
  • 1 Serpent of Yawning Depths
  • 1 Shard of the Nightbringer
  • 1 Shark Shredder, Killer Clone
  • 1 Shipbreaker Kraken
  • 1 Shipwreck Marsh
  • 1 Shizo, Death's Storehouse
  • 1 Slinn Voda, the Rising Deep
  • 1 Sol Ring
  • 1 Spawning Kraken
  • 1 Stormsurge Kraken
  • 1 Summon: Leviathan
  • 3 Swamp
  • 1 Talisman of Dominance
  • 1 Thassa, God of the Sea
  • 1 The Unagi of Kyoshi Island
  • 1 Trench Gorger
  • 1 Undercity Sewers
  • 1 Underground Sea
  • 1 Vesuvan Drifter
  • 1 War Room
  • 1 Watery Grave
  • 1 Weed Strangle
  • 1 Whelming Wave
  • 1 Whirlpool Whelm
  • 1 Wrexial, the Risen Deep