4 Karn, Scion of Urza 4 Navigator's Compass 2 Treasure Map 2 Canyon Slough 4 Herald of Anguish 1 Aethersphere Harvester 4 Servo Schematic 1 Tezzeret the Schemer 4 Maverick Thopterist 2 Fatal Push 4 Spire of Industry 2 Walking Ballista 3 Metallic Rebuke 4 Spirebluff Canal 2 Cogworker's Puzzleknot 1 Inventors' Fair 4 Prophetic Prism 2 Dragonskull Summit 3 Drowned Catacomb 5 Swamp 2 Island Sideboard 1 The Antiquities War 2 Vraska's Contempt 1 Sentinel Totem 1 Sorcerous Spyglass 3 Bontu's Last Reckoning 2 Abrade 2 Contraband Kingpin 1 Negate 2 Duress