Overview:

This Breya, Etherium Shaper deck is a high-synergy artifact engine leveraging recursion, combo potential, and value-generating stax elements. The commander serves as a flexible removal tool, token generator, and combo outlet (e.g., Time Sieve + Thopter Assembly not listed but implied via artifact token spam). The deck features multiple Urza/Mishra variants and artifact lords to enable explosive turns, while backup win conditions include Tezzeret, Master of the Bridge burn, Portal to Phyrexia attrition, and Brudiclad, Telchor Engineer token overruns. Key themes include artifact recursion (Goblin Welder, Sharuum the Hegemon), stax (Ethersworn Canonist), and infinite mana combos with Thopter Foundry/Sword of the Meek (not listed but enabled via artifact recursion).

Primer:

Core Strategy Execution:

1. Early Setup (T1-3): Deploy artifact lands (Ancient Den, Great Furnace), mana rocks, and value engines like Rhystic Study/Smothering Tithe. Use Goblin Engineer to bin key artifacts.
2. Midgame Value (T4-6): Resolve Breya or Urza, Lord High Artificer to generate artifact synergies. Reanimate key pieces with Goblin Welder or Sharuum the Hegemon. Deploy stax elements (Ethersworn Canonist) to slow opponents.
3. Win Conditions:
   • Combo: Time Sieve + artifact token generation (Breya's Thopters, Retrofitter Foundry) for infinite turns.
   • Overwhelm: Brudiclad, Telchor Engineer copying Wurmcoil Engine tokens or Myr Battlesphere.
   • Burn: Tezzeret, Master of the Bridge's +2 ability with 20+ artifacts.

Mulligan Priorities:

• Keep hands with 2-3 lands including artifact lands.
• Prioritize early ramp (Sol Ring, Talismans) or engine starters (Rhystic Study, Goblin Welder).
• Avoid hands lacking artifact synergy or color fixing.

Key Tips:

• Use Unwinding Clock to untap artifacts during opponents' turns, enabling instant-speed Goblin Welder swaps.
• Darksteel Forge + Mycosynth Lattice (not listed but implied via artifact protection) makes your board indestructible.
• Sacrifice Breya to her own ability with Relic of Legends to recast her for more Thopters.

Weaknesses:

Critical

• Artifact Wipes: Vandalblast or Bane of Progress can erase the deck's entire board state.
• Graveyard Hate: Rest in Peace shuts off recursion from Goblin Engineer/Sharuum the Hegemon.
• Anti-Synergy Cards: Null Rod/Stony Silence disable artifact mana and key engines.

Moderate

• Fast Combo Decks: Limited early interaction beyond Force of Will/Counterspell.
• Color Requirements: Four-color mana base struggles under Blood Moon effects.

Minor

• Single-Target Removal: Easily recovers with artifact recursion.
• Life Loss: Pain lands and Breya's sac ability can accumulate damage.

Most Important Cards:

• Urza, Lord High Artificer (Mana generation, card advantage)
• Time Sieve (Primary combo enabler)
• Darksteel Forge (Board protection)
• Goblin Welder (Recursion engine)
• Tezzeret, Master of the Bridge (Burn finisher)
• Smothering Tithe (Ramp/draw engine)
• Rhystic Study (Card advantage)
• Force of Will (Critical interaction)
• Ethersworn Canonist (Stax piece)
• Portal to Phyrexia (Attrition tool)

Attribute Ratings:

Speed: 7/10

• Can threaten T5-7 wins via Time Sieve or Tezzeret, Master of the Bridge with sufficient artifact density.

Resilience: 6/10

• Strong recursion and protection (Teferi's Protection, Force of Will), but folds to resolved artifact wipes.

Consistency: 7/10

• Multiple tutors (Goblin Engineer, Inventors' Fair) and draw engines, but lacks focused combo redundancy.

Interaction: 8/10

• Robust suite of counterspells, removal (Anguished Unmaking, Cyclonic Rift), and stax elements.

Rating Justification:

This deck operates at a high-power casual level with T5-7 win potential through resilient artifact synergies and combos, but lacks the speed/tutor density of cEDH. Its vulnerability to artifact hate and moderate consistency place it below optimized tiers.

Power level: 6.5 - 7.0