This is an artifact-creature aggro deck that floods the board with artifacts and turns them into a large, anthem-stacked army. Urza is both the anthem and the late-game mana sink: he gives artifact creatures +2/+2, and his {6} ability copies any artifact the player controls as a 1/1 Soldier creature, which his own buff makes at least 3/3. Cost reducers for creature abilities make that copying cheaper to repeat, and cast and enter triggers turn every artifact into Thopters, cards and extra bodies. How it wins: It swarms with stacked anthems, often granting flying across the team, and attacks with evasive artifact creatures and Myr Battlesphere damage until opponents fall. Key roles: - Anthem stacking: Several lords and Urza, Prince of Kroog layer static buffs so even 1/1 tokens and mana dorks become real threats. (Master of Etherium, Chief of the Foundry, Salvation Engine) - Copy engine: Urza, Prince of Kroog's copy ability gets cheaper with activation discounts and is amplified by clone effects. Copying a big-ETB artifact or a mana rock as a creature doubles value and adds bodies. (Training Grounds, Heartstone, Sculpting Steel) - Token generation: Artifact cast triggers and upkeep triggers create flying Thopters and other artifact tokens that all benefit from the anthems. (Efficient Construction, Sai, Master Thopterist, Myr Battlesphere) - Artifact ramp and cost reduction: Rocks, Myr, artifact lands and artifact cost reducers deploy threats fast and fuel improvise and affinity payoffs. Untapping artifacts on opponents' turns doubles that mana for instant-speed copying. (Etherium Sculptor, Unwinding Clock, G

Urza, Prince of Kroog decklist

• Arcane Signet
• Azorius Signet
• Commander's Sphere
• Futurist Forge
• Gilded Lotus
• Heartstone
• Hedron Archive
• Ichor Wellspring
• Liquimetal Torque
• Midnight Clock
• Mind Stone
• Powerstone Shard
• Salvation Engine
• Sculpting Steel
• Sol Ring
• Swiftfoot Boots
• The Mightstone and Weakstone
• Thought Vessel
• Unwinding Clock
• Adarkar Wastes
• Ancient Den
• Azorius Chancery
• Buried Ruin
• Command Tower
• Darksteel Citadel
• Evolving Wilds
• Glacial Fortress
• 10× Island
• 9× Plains
• Power Depot
• Prairie Stream
• Razortide Bridge
• Seat of the Synod
• Spire of Industry
• Temple of Enlightenment
• Terramorphic Expanse
• Urza's Mine
• Chief of the Foundry
• Cyberdrive Awakener
• Etherium Sculptor
• Foundry Inspector
• Jhoira's Familiar
• Kappa Cannoneer
• Liberator, Urza's Battlethopter
• Losheel, Clockwork Scholar
• Master of Etherium
• Mendicant Core, Guidelight
• Meteor Golem
• Myr Battlesphere
• Ornithopter
• Ornithopter of Paradise
• Padeem, Consul of Innovation
• Palladium Myr
• Sai, Master Thopterist
• Silver Myr
• Solemn Simulacrum
• Steel Overseer
• Thought Monitor
• Trinket Mage
• Trophy Mage
• Ultron Drone
• Viv Vision, Teen Synthezoid
• Efficient Construction
• Fateful Discovery
• Thopter Spy Network
• Training Grounds
• Aetherize
• Counterspell
• Dispatch
• Jwari Disruption // Jwari Ruins
• Negate
• Path to Exile
• Scour for Scrap
• Stern Lesson
• Swords to Plowshares
• Thirst for Knowledge
• Karn, Living Legacy
• Dance of the Manse
• Echocasting Symposium
• Organic Extinction
• Thoughtcast
• Island