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Koma, Cosmos Serpent
TLE · Avatar: The Last Airbender Eternal #51 · Mythic · released 2025-11-21
{3}{G}{G}{U}{U}
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.
Koma, Cosmos Serpent is a mythic green-blue creature from Avatar: The Last Airbender Eternal (2025). It has been printed 8 times across 6 sets, from 2021 to 2025. Recent market prices range from $4.52 to $16.69 depending on printing and finish. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Oathbreaker, Historic, Brawl and Penny Dreadful.
USD$5.01
USD Foil$5.64
Format legality
Where you can play Koma, Cosmos Serpent in sanctioned and popular formats.
StandardNot legal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
PauperNot legal
OathbreakerLegal
HistoricLegal
BrawlLegal
Penny DreadfulLegal
All printings (8)
Prices range from $4.52 to $16.69 across finishes. Cheapest printing: Avatar: The Last Airbender Eternal at $4.52.
| Set | No. | Rarity | Price | Foil |
|---|---|---|---|---|
| Kaldheim Promos | 221s | Mythic | — | $16.69 |
| Kaldheim Promos | 221p | Mythic | $6.37 | $5.53 |
| Kaldheim | 326 | Mythic | $6.58 | $14.59 |
| Kaldheim | 221 | Mythic | $5.97 | $6.19 |
| Magic Online Promos | 88356 | Mythic | — | — |
| Murders at Karlov Manor Commander | 213 | Mythic | $6.33 | — |
| Secret Lair Drop | 1765 | Mythic | $14.67 | — |
| Avatar: The Last Airbender Eternal This page | 51 | Mythic | $4.52 | $5.99 |
More from Avatar: The Last Airbender Eternal
Rulings
Official rulings from Wizards of the Coast (5).
- 2021-02-05A 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.
- 2021-02-05You can't sacrifice Koma itself to activate its last ability, but you can sacrifice any other Serpent you control, including Koma's Coil.
- 2021-02-05If 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.
- 2021-02-05Activated 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.
- 2021-02-05The 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.
Frequently asked questions
Is Koma, Cosmos Serpent legal in Commander?
Yes — Koma, Cosmos Serpent is legal in Commander (EDH).
What formats is Koma, Cosmos Serpent legal in?
Koma, Cosmos Serpent is legal in Pioneer, Modern, Legacy, Vintage, Commander, Oathbreaker, Historic, Brawl and Penny Dreadful.
How many times has Koma, Cosmos Serpent been printed?
Koma, Cosmos Serpent has been printed 8 times across 6 sets, from 2021 to 2025.
What is the cheapest printing of Koma, Cosmos Serpent?
The cheapest printing is Avatar: The Last Airbender Eternal (#51) at about $4.52.
Who illustrated Koma, Cosmos Serpent?
This printing of Koma, Cosmos Serpent was illustrated by Viacom.