Legendary Creature — Human Monk

Dosan the Falling Leaf

Mana value3EDHREC#6,095

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The Commander

Players can cast spells only during their own turns.

Guide

Gameplan

Dosan locks opponents out of instant-speed interaction by forcing all spells to be cast only on a player's own turn, then you leverage that protection to resolve threats, combos, and big mana plays unopposed. Ramp into Dosan early, deploy your engine while opponents sit helpless on their turns, and close before they can untap into answers. Mono-green gives you the acceleration and creature density to abuse the asymmetry.

Strengths

Shuts off counterspells, removal, and combat tricks on your turn, making your spells effectively uncounterable and untargetable until opponents untap
Enables fragile combos and Voltron strategies to go off without instant-speed disruption
Mono-green ramp lets you cast Dosan and a payoff in the same turn for a sudden lock
Cheap commander (3 MV) that recasts easily and demands a hard removal answer

Weaknesses

Symmetrical effect also stops YOUR instants on opponents' turns, hurting reactive plays
Dies to any spot removal or board wipe cast on the caster's own turn, instantly opening the window
Mono-green lacks card draw and counterplay outside of green's narrow toolkit
Doesn't stop activated abilities, sorcery-speed removal, or attacks—only spell casting timing
Telegraphs your intent and paints a target; opponents pre-emptively remove Dosan or hold up answers on their own turns

Key Cards

Heroic Intervention — Protects your board and Dosan from sorcery-speed wipes when cast on your own turn.
Cyclonic Rift — Off-color, but illustrates why you instead lean on green's Vandalblast-style asymmetry; use green's own blowouts proactively.
Craterhoof Behemoth — Closes games the same turn you deploy it, perfect since opponents can't respond with instants.
Seedborn Muse — Lets you untap and act on every turn while opponents are gated to their own, multiplying Dosan's asymmetry.
Vorinclex, Voice of Hunger — Stacks mana denial with the casting lock to grind opponents out of resources.
Asceticism — Gives your team hexproof and regeneration to weather the sorcery-speed removal Dosan can't stop.

Upgrade Path

Lean into asymmetry with untap engines like Seedborn Muse and Wilderness Reclamation so you can act freely while opponents stay gated. Add proactive green stax (Vorinclex, Voice of Hunger; Root Maze; Collector Ouphe) and protection (Asceticism, Heroic Intervention, Vines of Vastwood) to defend Dosan and your board from the sorcery-speed removal he can't stop. Finally, install a fast, resolution-proof finisher package—Craterhoof, Finale of Devastation, or a tight green combo—to win the turn the lock comes online before opponents untap into hard answers.

Core Cards

The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.

Win Conditions

▸Craterhoof Behemoth or Overwhelming Stampede alpha strike that resolves unopposed
▸Voltron beats with an unkillable commander or hexproof threat
▸Resolving a green combo (e.g., infinite mana into a finisher) with no instant-speed interaction available
▸Grinding the table out under stax and mana denial while you act every turn

Archetypes

Combo — Dosan guarantees combos resolve uninterrupted since opponents can't hold up answers on your turn.
Voltron — Suit up a creature without fear of instant-speed removal or combat tricks blowing you out.
Stax/Prison — Dosan is itself a soft lock that pairs with mana denial and untap engines to suffocate the table.
Big Mana Ramp — Mono-green ramp powers out threats that, once cast, can't be answered until opponents untap.