Koma, Cosmos Serpent
PKHMKaldheim Promos/#221p/2021MythicPromoReprint
Colour IDMV 7
Current paper retail
Card Kingdom$7.49
Cardmarket€4.23
ManaPool$6.02
TCGplayer$6.31
Buylist (dealers pay)
Card Kingdom$4.20
Paper retail history (USD)
3 providers
Latest $7.49High $7.49Low $5.99▲ 15.4%
Market and collecting
Market overview
$6.31TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▼ 0.3%30d▼ 0.9%90d▼ 3.4%
90d high
$6.54
90d low
$6.27
Paper printings priced
7
Currently 2nd
Cheapest paper printing
$4.78
Avatar: The Last Airbender Eternal
- Down 0.9% over the last 30 days on TCGplayer.
- Currently 4% below its 90 day high of $6.54.
- This printing is the 2nd cheapest paper printing currently priced (7 priced in total).
- Foil copies of this printing are trading 11% below nonfoil.
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Compare printings (7 priced)
Gameplay and rules
Legendary Creature — Serpent
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.
6 / 6
Card capabilities
CreatureLegendary creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (5)
wotc5 Feb 2021
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.
wotc5 Feb 2021
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.
wotc5 Feb 2021
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.
wotc5 Feb 2021
You can't sacrifice Koma itself to activate its last ability, but you can sacrifice any other Serpent you control, including Koma's Coil.
wotc5 Feb 2021
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.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
Shares Creature, Legendary creatureSame colour identity
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About this card
Koma, Cosmos Serpent
Koma, Cosmos Serpent is a Legendary Creature — Serpent, with mana cost {3}{G}{G}{U}{U} (mana value 7). Printed 7 times across MTG sets.
Format legality: Commander: legal, Modern: legal, Standard: not_legal, Pioneer: legal, Legacy: legal, Pauper: not_legal.
Current headline price on TCGplayer: $6.31 (down 0.9% over 30 days).
Frequently asked
Koma, Cosmos Serpent FAQ
How much is Koma, Cosmos Serpent worth?
The current TCGplayer USD retail price for Koma, Cosmos Serpent is $6.31. It is down 0.9% over the last 30 days. Over 90 days it has ranged from $6.27 to $6.54.
What is the cheapest printing of Koma, Cosmos Serpent?
The cheapest currently priced paper printing is from Avatar: The Last Airbender Eternal at $4.78 on TCGplayer.
What is the most expensive printing of Koma, Cosmos Serpent?
The most expensive currently priced paper printing is from Kaldheim Promos at $16.69 on TCGplayer.
How many printings of Koma, Cosmos Serpent are there?
Koma, Cosmos Serpent has been printed 7 times in English paper sets that MTGPrices tracks.
What set was Koma, Cosmos Serpent first printed in?
The earliest English paper printing that MTGPrices tracks is from PKHM #221p, released 2021-02-05.
What is the newest printing of Koma, Cosmos Serpent?
The most recent English paper printing that MTGPrices tracks is from TLE #51, released 2025-11-21.
Is there a foil version of Koma, Cosmos Serpent?
Yes. On this printing, foil copies trade at $5.63 versus $6.31 for nonfoil, which is 11% less expensive on TCGplayer.
Is Koma, Cosmos Serpent legal in Commander?
Yes, Koma, Cosmos Serpent is currently legal in Commander per Scryfall's legality feed.