Overview:

This Simic (GU) deck leverages Koma, Cosmos Serpent as a self-replicating engine that generates Serpent tokens every turn to dominate the board. The primary strategy combines token multiplication (via Doubling Season, Adrix and Nev, Twincasters, and clone effects) with stax elements like Winter Orb and Propaganda to control opponents. Koma serves as the linchpin—its tokens fuel tap-down abilities for disruption while enabling explosive wins through combat overruns with Craterhoof Behemoth or infinite token combos using clone synergies. The deck ramps aggressively to deploy Koma early and protects it with counterspells, hexproof equipment, and its own indestructible ability.

Primer:

Core Strategy Execution:

1. Ramp & Setup (Turns 1-4): Prioritize mana dorks (Llanowar Elves, Birds of Paradise), land-fetch spells (Three Visits, Skyshroud Claim), and card engines (Sylvan Library, Tatyova, Benthic Druid). Aim to cast Koma by turn 5.
2. Engine Activation (Turns 5-6): Deploy Koma and immediately equip Lightning Greaves/Swiftfoot Boots or clone it (Sakashima of a Thousand Faces, Spark Double) to double token output. Use tokens to tap threats and lock opponents with Opposition/Junk Winder.
3. Win Conversion (Turns 6-8):
   • Combat: Flood the board with Serpents, then cast Craterhoof Behemoth or Finale of Devastation (X≥10) for lethal.
   • Combo: Clone Koma infinitely with Helm of the Host + haste enablers or use Seedborn Muse to generate overwhelming tap-down locks.
   • Control: Pair Winter Orb with token-based tapping to paralyze opponents' resources.

Mulligan Priorities:

• Keep hands with 2-3 lands, at least one ramp spell, and early interaction (e.g., Mental Misstep, Nature's Lore).
• Prioritize hands containing Koma-protection (counterspells, hexproof equipment) or a clone/token doubler.
• Avoid slow hands lacking ramp or card draw.

Key Tips:

• Protect Koma at All Costs: Sacrifice tokens for indestructible in response to wipes; counter targeted removal.
• Leverage Upkeeps: Koma's token trigger occurs on every player's upkeep—use clones to multiply this effect.
• Stax Sequencing: Deploy Propaganda before Koma to deter attacks; drop Winter Orb after establishing token mana sources like Cryptolith Rite.
• Draw Synergies: Kindred Discovery (naming Serpent) and Elemental Bond turn token generation into card advantage.

Weaknesses:

Critical

• Enchantment/Artifact Hate: Cripples token doublers (Doubling Season), stax pieces (Winter Orb), and mana engines (Cryptolith Rite).
• Mass Exile/Tuck Effects: Farewell or Terminus bypass Koma's indestructible and permanently reset the board.
• Anti-Token Tech: Torpor Orb/Hushbringer null ETB triggers from clones and Craterhoof Behemoth.

Moderate

• Fast Combo Decks: Struggles to disrupt non-creature wins before establishing its own board lock.
• Land Destruction: Slows ramp-dependent strategy; Blood Moon disrupts color fixing.

Minor

• Graveyard Hate: Mildly impacts recursion (Eternal Witness, Regrowth).
• Fliers: Limited reach, but tokens can tap flyers via Koma/Opposition.

Most Important Cards:

• Seedborn Muse (Untap all permanents each turn, enabling multiple Koma activations)
• Doubling Season (Doubles tokens and clone counters, accelerating win conditions)
• Craterhoof Behemoth (Primary combat finisher)
• Cyclonic Rift (Board reset enabling alpha strikes)
• Sakashima of a Thousand Faces (Clones Koma without legend rule, doubling tokens)
• Winter Orb (Stax piece that locks opponents while you generate token mana)
• Finale of Devastation (Tutor/win condition; fetches Koma or Craterhoof)
• Adrix and Nev, Twincasters (Token doubler synergizing with Koma's coils)
• Mana Drain (Counters threats while ramping into Koma/clones)
• Helm of the Host (Infinite Koma tokens with haste)

Attribute Ratings:

Speed: 7/10

• Consistently threatens T6-7 wins via Craterhoof or Helm of the Host combos, supported by explosive ramp and tutors.

Resilience: 7/10

• Robust protection (counterspells, hexproof, indestructible) and recursion mitigate disruption, but relies heavily on Koma staying on board.

Consistency: 8/10

• High ramp density (15+ sources), multiple card-draw engines, and creature tutors (Worldly Tutor, Green Sun's Zenith) ensure reliable access to key pieces.

Interaction: 8/10

• Strong counterspell suite (Mana Drain, Swan Song), targeted removal (Beast Within, Pongify), and tap-down control via Koma tokens.

Rating Justification:

This deck operates at high-power casual levels, leveraging efficient ramp and tutors to execute T6-7 wins through combat or combo, aligning with the "Focused Competitive" tier (T5-6 wins). Its resilience against targeted removal and stax capabilities elevate it beyond optimized casual, but vulnerability to board wipes and enchantment hate caps its ceiling.

Power level: 7.0 - 7.5