Your search for "harness infinity 343" revealed the following:
Harness Infinity - Extended Art (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity
Harness Infinity (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity
Harness Infinity - Extended Art (Foil) (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity
Harness Infinity (Foil) (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity
Harness Infinity - Promo Pack (PSTX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity.
Harness Infinity - Promo Pack (Foil) (PSTX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity.
Harness Infinity - Prerelease Promo (Foil) (PSTX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Seb McKinnon Card Text:Exchange your hand and graveyard.Exile Harness Infinity.