Your search for "Arcane Proxy 319" revealed the following:
Arcane Proxy (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)...
Arcane Proxy (Foil) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and...
Arcane Encyclopedia (M19) from Core Set 2019, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Nic Klein Card Text:3, T: Draw a card.
Arcane Proxy - Extended Art (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps its...
Arcane Proxy - Extended Art (Foil) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps...
Arcane Proxy - Promo Pack (Foil) (PBRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps...
Arcane Proxy - Prerelease Promo (Foil) (PBRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps...
Arcane Proxy - Promo Pack (PBRO) from The Brothers' War, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Kekai Kotaki Card Text:Prototype (You may cast this spell with different mana cost, color, and size. It keeps its...