Main deck (60) 4 Baleful Strix 4 Brainstorm 1 Cavern of Souls 4 Dark Ritual 4 Doomsday 2 Duress 4 Flooded Strand 2 Force of Negation 4 Force of Will 1 Island 3 Marsh Flats 4 Murktide Regent 4 Polluted Delta 4 Ponder 1 Swamp 3 Teferi, Time Raveler 3 Temporal Mastery 1 Thassa's Oracle 3 Thoughtseize 1 Tundra 3 Underground Sea Sideboard (15) 1 Batterskull 1 Kaldra Compleat 1 Plains 4 Prismatic Ending 4 Stoneforge Mystic 4 Swords to Plowshares