4 Arcum's Astrolabe 4 Urza, Lord High Artificer 4 Goblin Engineer 2 Whir of Invention 1 Fatal Push 1 Spire of Industry 1 Inventors' Fair 1 Grafdigger's Cage 2 Ichor Wellspring 4 Mox Opal 1 Galvanic Blast 1 Nihil Spellbomb 4 Scalding Tarn 4 Thopter Foundry 2 Sword of the Meek 4 Chromatic Star 4 Mishra's Bauble 1 Breeding Pool 1 Steam Vents 1 Watery Grave 1 Pithing Needle 1 Pyrite Spellbomb 4 Polluted Delta 1 Ensnaring Bridge 1 Snow-Covered Mountain 4 Snow-Covered Island 1 Snow-Covered Swamp Sideboard 2 Weather the Storm 2 Plague Engineer 3 Assassin's Trophy 2 Grafdigger's Cage 1 Tezzeret, Agent of Bolas 2 Nature's Claim 2 Thoughtseize 1 Duress