Overview:

This Rin and Seri deck leverages Naya's strengths to execute a high-speed token swarm strategy, utilizing Cat/Dog synergies amplified by powerful token doublers like Anointed Procession and Mondrak, Glory Dominus. Rin and Seri serves as both a token engine and a scalable win condition via its activated ability, while the deck accelerates rapidly with premium fast mana (e.g., Mox Diamond, Gaea's Cradle) to deploy threats like Jetmir, Nexus of Revels or Craterhoof Behemoth for explosive combat wins. Alternate paths include Aetherflux Reservoir lifegain kills and commander damage. The commander is synergistic but not essential, as the deck functions through multiple token generators and finishers.

Primer:

Core Strategy Execution:

1. Explosive Start (Turns 1-3): Deploy fast mana (Mana Vault, Mox Opal, Sol Ring) and land tutors (Three Visits, Nature's Lore) to accelerate. Prioritize token doublers (Anointed Procession, Mondrak, Glory Dominus) or key engines like Sylvan Library.
2. Token Generation (Turns 2-5): Cast low-cost Cats/Dogs (Esper Sentinel, Brimaz, King of Oreskos) or token producers (Leonin Warleader, Regal Caracal). Activate Rin and Seri's token creation passively through spellcasting.
3. Overwhelm (Turns 4-6): Resolve finishers: Jetmir, Nexus of Revels for massive combat buffs, Craterhoof Behemoth for trample lethality, or Aetherflux Reservoir with lifegain from Cat tokens. Use tutors (Worldly Tutor, Gamble) to find missing pieces.
4. Alternative Closers: Activate Rin and Seri's damage ability with 10+ Dogs, or leverage Urza's Saga to fetch Skullclamp/Lotus Petal for draw/ramp.

Mulligan Priorities:

• Keep hands with 2-3 lands, including at least one green source.
• Prioritize fast mana (e.g., Mox Diamond, Lion's Eye Diamond) or a turn 1 ramp spell (Utopia Sprawl, Birds of Paradise).
• Seek an early token doubler, tutor, or engine card (Sylvan Library, Aura Shards).
• Reject hands lacking acceleration or clogged with high-CMC spells without setup.

Key Tips:

• Protect Critical Mass: Use free protection (Deflecting Swat, Fierce Guardianship, Teferi's Protection) to shield token doublers or finishers from removal. Grand Abolisher locks opponents out during your turn.
• Maximize Token Value: Skullclamp sacrifices 1-toughness tokens for massive card draw. Aura Shards destroys artifacts/enchantments on creature entry.
• Sequence Mana Carefully: Gaea's Cradle scales with board state—deploy creatures before tapping it. Lion's Eye Diamond enables explosive turns but requires hand management.
• Leverage Recursion: Loyal Retainers retrieves fallen legendaries like Jetmir or Rin and Seri.

Weaknesses:

Critical

• Board Wipes: Mass removal (e.g., Toxic Deluge, Damnation) devastates the go-wide strategy, often requiring a full rebuild.
• Anti-Token Tech: Cursed Totem/Linvala, Keeper of Silence disable Rin and Seri's ability and mana dorks; Torpor Orb nulls ETB token generators.
• Stax Locks: Rule of Law/Deafening Silence severely limit spell-based token generation.

Moderate

• Graveyard Hate: Rest in Peace disrupts Loyal Retainers recursion and Finale of Devastation's graveyard mode.
• Fast Combo Decks: Struggles to interact at instant speed with non-creature combos (e.g., Thassa's Oracle + Demonic Consultation).

Minor

• Land Destruction: Nonbasic-heavy mana base suffers against Blood Moon or Strip Mine loops, though Boseiju, Who Endures provides some answer.
• Flying Threats: Limited reach makes flyers problematic without trample enablers.

Most Important Cards:

• Anointed Procession (Token doubling cornerstone)
• Jetmir, Nexus of Revels (Primary combat finisher)
• Gaea's Cradle (Explosive mana scaling with tokens)
• Craterhoof Behemoth (Alternate combat finisher)
• Mondrak, Glory Dominus (Token doubler with protection)
• Aetherflux Reservoir (Lifegain-based win condition)
• Mox Diamond (Critical turn 1 acceleration)
• Sylvan Library (Card selection/value engine)
• Finale of Devastation (Tutor + win condition)
• Deflecting Swat (Free protection for key spells)

Attribute Ratings:

Speed: 8/10

• Capable of T3-4 wins with perfect draws (e.g., fast mana into token doubler + Jetmir) and consistently threatens T5-6 kills via combat or Aetherflux.

Resilience: 6/10

• Free protection spells and recursion (Loyal Retainers) mitigate disruption, but heavy reliance on board presence creates vulnerability to wipes.

Consistency: 8/10

• Extensive tutors (Gamble, Worldly Tutor, Enlightened Tutor), card selection (Sylvan Library), and functional redundancy (multiple token doublers/finishers) ensure reliable execution.

Interaction: 5/10

• Efficient targeted removal (Swords to Plowshares, Boseiju, Who Endures) and stax (Grand Abolisher, Aura Shards), but lacks stack interaction beyond protection spells.

Rating Justification:

The deck achieves cEDH-adjacent speed through explosive mana and efficient win conditions (T4-5 wins unimpeded), but its reliance on combat and vulnerability to board wipes prevent true cEDH resilience. High consistency via tutors and redundancy elevates it above typical high-power builds, placing it in the upper tier of optimized decks.

Power level: 7.5 - 8.0