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Koma, Cosmos Serpent

GreenBlue

7 printings listed in our catalog, from newest to oldest.

Koma, Cosmos Serpent, Avatar: The Last Airbender Eternal printing
Avatar: The Last Airbender Eternal TLE · No. 51 2025-11-21

Card text

{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.
6 / 6
EDHREC rank #1470 Mythic Not on the Reserved List
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The 7 printings

All, with their prices ↓

Standard ∅ Not legal
Pioneer ✓ Legal
Modern ✓ Legal
Legacy ✓ Legal
Vintage ✓ Legal
Pauper ∅ Not legal
Commander ✓ Legal
Oathbreaker ✓ Legal
Brawl ✓ Legal
Historic ✓ Legal
Timeless ✓ Legal
Alchemy ∅ Not legal
Explorer ∅ Not legal
Gladiator ✓ Legal
Penny ✓ Legal
Duel ✓ Legal

Official rulings

5 rulings · in English, source Scryfall

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 · Wizards of the Coast

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 · Wizards of the Coast

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 · Wizards of the Coast

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 · Wizards of the Coast

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.

2021-02-05 · Wizards of the Coast

All printings

Koma, Cosmos Serpent, Murders at Karlov Manor Commander printing
Murders at Karlov Manor Commander
MKC · #213
Mythic
Tapt's Canadian calculation. How to read these prices
La Boutique Mythique · Condition LP
Koma, Cosmos Serpent, Kaldheim Promos printing
Kaldheim Promos
PKHM · #221p
Mythic
∅ No QC price
Koma, Cosmos Serpent, Kaldheim Promos printing
Kaldheim Promos
PKHM · #221s
Mythic
∅ No QC price