Thassa's Devourer

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  Counterspell (Borderless)

  $2.71

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  Propaganda

  $3.88

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  Hall of Heliod's Generosity

  $12.15

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  Demon of Fate's Design

  $0.53

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  Fraying Sanity

  $0.86

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  Negate

  $0.32

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  Archon of Sun's Grace

  $0.56

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  Arcane Sanctum

  $0.52

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Suggestions from EDHREC, narrowed to what is on our shelf.