1 Castle Vantress
1 Halimar Depths
1 Mystic Sanctuary
1 Path of Ancestry
1 Reliquary Tower
25 Snow-Covered Island
1 Adaptive Automaton
1 Alloy Myr
1 Ancient Crab
1 Armored Cancrix
1 Blackblade Reforged
1 Burnished Hart
1 Charix, the Raging Isle
1 Chromatic Orrery
1 Chromeshell Crab
1 Coat of Arms
1 Colossus Hammer
1 Crab
1 Crystacean
1 Dreadlight Monstrosity
1 Dreamscape Artist
1 Drownyard Behemoth
1 Eldrazi Conscription
1 Engulf the Shore
1 Expanded Anatomy
1 Flow of Ideas
1 Fortress Crab
1 Giant Crab
1 Gilded Lotus
1 Hard Evidence
1 Hedron Crab
1 High Tide
1 Hightide Hermit
1 Homarid Shaman
1 Horseshoe Crab
1 Iceberg Cancrix
1 Jwari Scuttler
1 Lazotep Plating
1 Lightning Greaves
1 Machine Over Matter
1 Marit Lage's Slumber
1 Merfolk Thaumaturgist
1 Metallic Mimic
1 Negate
1 Nyx Lotus
1 Ponder
1 Preordain
1 Pristine Talisman
1 Propaganda
1 Reconnaissance Mission
1 Ruin Crab
1 Salvage Scuttler
1 Sapphire Medallion
1 Scatter Ray
1 Scourge of Fleets
1 Scuttletide
1 Serum Visions
1 Shell Shield
1 Slip Through Space
1 Sol Ring
1 Solemn Simulacrum
1 Spatial Contortion
1 Spectrum Sentinel
1 Sublime Epiphany
1 Swiftfoot Boots
1 Sword of the Animist
1 Thassa, God of the Sea
1 Thassa's Emissary
1 Twisted Image
1 Vanquisher's Banner
1 Vexing Scuttler
1 Wash Out
1 Wayfarer's Bauble
1 Wing Commando
1 Wishcoin Crab
1 Wonder
1 Wormfang Crab
Sideboard:
1 Crab Umbra
1 Hedron Scrabbler
1 Hullbreaker Horror
1 Intruder Alarm
1 Kefnet's Monument
1 King Crab
1 Littjara Kinseekers
1 Mirrorshell Crab
1 Purple-Crystal Crab
1 Rogue's Passage
1 Shipbreaker Kraken
1 Skittering Crustacean
1 Spark Double
1 Thassa's Oracle
1 Thran Dynamo