Koma, Cosmos Serpent card art

Koma, Cosmos Serpent

Legendary Creature — Serpent MV 7

Tracked across real Commander games played through TurnZero HQ.

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What it doesCombosRulingsIn the 99Every version

What it does

This spell can't be countered.

At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.

Sacrifice another Serpent: Choose one —

• Tap target permanent. Its activated abilities can't be activated this turn.

• Koma gains indestructible until end of turn.

Combos with Koma, Cosmos Serpent

Lines this card is part of — what it needs alongside it, and what the two of them do. An infinite result is the one that moves a deck's bracket.

Combo data from Commander Spellbook, the community-maintained database of Magic combos. Mirrored nightly.

Rulings

5 official rulings, in the order Wizards published them.

  • 2021-02-05

    A spell or ability that counters spells can still target Koma, Cosmos Serpent. When that spell or ability resolves, Koma won't be countered, but any additional effects of the countering spell or ability will still happen.

  • 2021-02-05

    The first mode of Koma's activated ability doesn't stop static abilities from affecting the game, and it doesn't stop triggered abilities from triggering. Unlike similar effects, it does stop mana abilities from being activated. Most activated abilities that produce mana as they resolve are mana abilities.

  • 2021-02-05

    If you choose the first mode of Koma's activated ability, you can choose a permanent that's already tapped as the target. The effect stopping its activated abilities will still apply.

  • 2021-02-05

    You can't sacrifice Koma itself to activate its last ability, but you can sacrifice any other Serpent you control, including Koma's Coil.

  • 2021-02-05

    Activated abilities contain a colon and appear in the form "[Cost]: [Effect]." Some keywords such as equip are activated abilities and will have colons in their reminder texts. Loyalty abilities of planeswalkers are also activated abilities.

Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.

In the 99

Every deck whose current list includes Koma, Cosmos Serpent, whatever its commander.

Decks running it 3
Games played 0
Win rate — Fewer than 5 completed games — not enough to publish a rate yet.
Confirmed on board 0 Games where a board photo caught it actually in play.

Most played under

Commander Decks Games Win rate
Morska, Undersea Sleuth 1 0 —
Thranduil the Strategist 1 0 —

Colors it shows up in

  • Simic 1 deck
  • Bant 1 deck

Every version of Koma, Cosmos Serpent

7 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly — a printing with no figure shows a dash rather than a zero, because Scryfall genuinely publishes none for some of them.

Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Koma, Cosmos Serpent — a name search across every version, for the printings TCGplayer publishes no direct link to.

Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only — no individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.