Koma, Cosmos Serpent
Koma, Cosmos Serpent Price Summary
As of Jul 23, 2026, the cheapest tracked printing of Koma, Cosmos Serpent is $3.14 (TLE #51, Borderless), and the most expensive is $17.45 (PKHM #221s, Prerelease, Foil). The benchmark price (cheapest playable nonfoil) is $3.14, up 3.3% over 7 days, up 7.2% over 30 days, up 6.8% over 90 days. All-time tracked high: $13.40 (2026).
Koma, Cosmos Serpent Printings & Prices
Koma, Cosmos Serpent has 7 tracked printings across 5 sets, in nonfoil and foil finishes, including borderless, promo pack, prerelease and showcase treatments.
Sell Koma, Cosmos Serpent: Buylist Offers
Card Kingdom currently pays $12.00 cash for SLD #1765 (Foil).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | SLD #1765 | Foil | $12.00 | — | — |
| Card Kingdom | PKHM #221s | Foil | $12.00 | $20.99 | 43% |
| Card Kingdom | SLD #1765 | Nonfoil | $7.00 | $11.99 | 42% |
| Card Kingdom | PKHM #221p | Foil | $4.50 | $8.99 | 50% |
| Card Kingdom | TLE #51 | Foil | $4.00 | $7.99 | 50% |
| Card Kingdom | KHM #326 | Nonfoil | $3.20 | $7.99 | 60% |
| Card Kingdom | TLE #51 | Nonfoil | $2.75 | $5.49 | 50% |
| Card Kingdom | MKC #213 | Nonfoil | $2.50 | $5.99 | 58% |
| Card Kingdom | KHM #221 | Nonfoil | $2.50 | $5.99 | 58% |
| Card Kingdom | PKHM #221p | Nonfoil | $2.00 | $5.99 | 67% |
Koma, Cosmos Serpent Rules Text & Legality
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.
Koma, Cosmos Serpent is legal in Pioneer, Modern, Legacy and Commander, and not legal in Standard and Pauper.
Koma, Cosmos Serpent Rulings
- Feb 5, 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.
- Feb 5, 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.
- Feb 5, 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.
- Feb 5, 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.
- Feb 5, 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.
Reprints & Reprint Risk
Koma, Cosmos Serpent has been reprinted 12 times. The Avatar: The Last Airbender Eternal reprint cut the price 86% in 30 days.
| Set | Date | Rarity | Treatment | Price before | Day 1 | 30 days | 90 days |
|---|---|---|---|---|---|---|---|
| TLE #51 | 2025-11-21 | Mythic | Borderless | $8.64 | $2.08 | $1.23 | $2.19 |
| TLE #51 | 2025-11-21 | Mythic | Borderless | $24.40 | $11.63 | $4.98 | $5.41 |
| MKC #213 | 2024-02-09 | Mythic | Standard | — | $3.93 | $2.23 | $2.19 |
| SLD #1765 | 2021-06-21 | Mythic | Borderless | — | — | — | — |
| SLD #1765 | 2021-06-21 | Mythic | Borderless | — | — | — | — |
| KHM #221 | 2021-02-05 | Mythic | Standard | — | — | — | — |
| KHM #221 | 2021-02-05 | Mythic | Standard | — | — | — | — |
| KHM #326 | 2021-02-05 | Mythic | Showcase | — | — | — | — |
| KHM #326 | 2021-02-05 | Mythic | Showcase | — | — | — | — |
| PKHM #221p | 2021-02-05 | Mythic | Promo Pack | — | — | — | — |
| PKHM #221p | 2021-02-05 | Mythic | Promo Pack | — | — | — | — |
| PKHM #221s | 2021-02-05 | Mythic | Prerelease | — | — | — | — |
TLE #51 
MKC #213 
SLD #1765 
KHM #221 
PKHM #221p Koma, Cosmos Serpent in Commander
Koma, Cosmos Serpent is the #1,397 most-played card on EDHREC, down 29 places over the last 30 days.
Koma, Cosmos Serpent FAQ
How much is Koma, Cosmos Serpent worth?
Koma, Cosmos Serpent is worth about $3.14 for its cheapest playable printing as of Jul 23, 2026. Prices range from $3.14 to $17.45 across 7 tracked printings.
Is Koma, Cosmos Serpent legal in Commander?
Yes — Koma, Cosmos Serpent is legal in Commander. It is also legal in Pioneer, Modern and Legacy.
Has Koma, Cosmos Serpent been reprinted?
Yes — Koma, Cosmos Serpent has been reprinted 12 times, with 7 printings tracked on The Index.
Why is Koma, Cosmos Serpent cheap?
Koma, Cosmos Serpent trades at about $3.14 — 12 reprints keep supply plentiful.