Koma, Cosmos Serpent

Koma, Cosmos Serpent

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, Cosmos Serpent gains indestructible until end of turn.
Browse Alters


Have (1) FSims81
Want (0)

Combos Browse all


Format Legality
1v1 Commander Legal
Arena Legal
Block Constructed Legal
Brawl Legal
Canadian Highlander Legal
Casual Legal
Commander / EDH Legal
Custom Legal
Duel Commander Legal
Gladiator Legal
Highlander Legal
Historic Legal
Legacy Legal
Leviathan Legal
Limited Legal
Modern Legal
Oathbreaker Legal
Pioneer Legal
Pre-release Legal
Standard Legal
Tiny Leaders Legal
Unformat Legal
Vintage Legal
Standard Legal

Koma, Cosmos Serpent Discussion

seshiro_of_the_orochi on I cant believe it's not mono-green

6 days ago

First things first: Three Visits is in here twice.

Second things second: Awesome build, really like this. Some cards to consider:

Aesi, Tyrant of Gyre Strait

Ulvenwald Hydra

Koma, Cosmos Serpent

harkness on Snow Midrange($25 Budget)

1 month ago

Going to give some feedback on playing this. I had a great time actually. First game unfortunately was against a snow Simic with almost the same cards except with much heavier beaters (Spirit Bear of doom!). I managed to get a few wins out of it though thanks to Ravenform and Annul to shut down the crazy Icebind Pillar . I switched in some Saw It Coming as I did not have access to Graven Lore and used it to great effect against a Goldspan or two. That said, I love killing things like Koma, Cosmos Serpent and said Goldspan Dragon with Priest of the Haunted Edge stealing them with Draugr Necromancer or King Narfi's Betrayal , only to tap them with Frost Breath . Fun, tough deck with a lot of response. I also switched in a Poison the Cup to be a bit more aggressive when I didn't have fliers and I replaced Frostpeak Yeti with Ascendant Spirit .

HarleyP on Snow Control

1 month ago

This is an interesting take on snow control. As awesome and fun Nethroi, Apex of Death is, I don't think he's a good fit in this deck. His reanimation would get 1-2 creatures back most of the time cause of the power of your creatures. Since you're playing white, I recommend Brought Back if you want recursion, especially with how many wrath effects you have. Granted it's not standard legal anymore, so if you're playing this on Arena, might have to build it in Historic. Or, if you're afraid of your board being wiped, Glorious Protector is an all star at saving your whole board. Combos really nice with a foretold Doomskar

Last idea is maybe replace the Icebreaker Kraken with Koma, Cosmos Serpent . Even at 1 copy, he is an amazing threat thats pretty good at protecting himself, and still a great mutate target. The Kraken is fun as a budget threat, but very lack luster compared to any big creature at a similar CMC.

Over all, really considering throwing more Mutate into some decks thanks to this list.

seshiro_of_the_orochi on A Whole World Of Waves

1 month ago

This is a great list. Some cards to maybe consider: Quest for Ula's Temple , Koma, Cosmos Serpent , Whelming Wave

seshiro_of_the_orochi on Pattern of deck Pool?

1 month ago

Disclaimer: I do realize this is a very open-ended topic with highly subjective possible answers. Nonetheless, I'm very interested what other users do think about this.

What is this topic? Here we go:

I'm a person with a very pattern-oriented mind. I like it when I can find patterns and small logical connections. This relates to numbers, to grammatical similarities over different languages, the way tiles are laid out, personality types and how to handle them and so on...

And I also like to find patterns in commander deck pools.

For example, I've considered to build a deck for each existing colour or combination of colours (I gave up on this...way too expensive).

Other patterns I have or had:

  • Two-coloured decks with humanoid female characters with a CMC from 2 to 4 (I still have Feather and Siona.)

  • Mono-coloured decks around massive feral beasts (Goreclaw and Moraug are what remains of this.)

  • I've finished Archelos, Lagoon Mystic a while ago, and I love this powerhouse of a landfall deck, and I've considered building both Kwain, Itinerant Meddler and Yurlok of Scorch Thrash for the lore connection or the connection of both being reptilian three-coloured humanoids. I didn't, as Kwain doesn't fit my playstyle and Yurlok has no foundation in my collection...I would basically have to buy the whole deck. Doesn't feel great.

  • Finally, I've found a version of Thantis, the Warweaver that I've put many hours of thought into by now, and that version screams to be finally tested (curse you, covid!). After pulling a Koma, Cosmos Serpent last week, I've also build a pretty cool version of this. There might be a new pattern starting, with both Thantis and Koma being colossal, intelligent and dangerous beings in animal-shape. I'm already thinking about which creatures could be added to that pattern. Yorion, Sky Nomad is a hot candidate, maybe as a Dance of the Manse O-ring deck..you know, what's normally going through a brewers mind...

This way of thinking lead to frustration sometimes, as I got annoyed by not continuing the pattern. Currently, I've accepted this. I don't want to force myself into building a deck that doesn't make me excited when thinking about finally playing it. This order of priorities works fine for me.

Ok, here are my questions: Do you recognize this pattern of seeing patterns from yourself? Are you disturbed by this way of thinking? Do you have some of these or other patterns yourself? I'd love to hear your thoughts and ideas on this. Happy exchange!


1 month ago

My version of Koma is all about clones and token doubling to try and swarm my opponents but I have also been running Mystic Reflection and the results with Ezuri's Predation have been very satisfying.
You need to ramp so hard to get Koma out early that I've had no problems with the mana cost.
A dozen Spark Double 's all copying Koma, Cosmos Serpent was enough to make the table scoop it up.

CasualFocusedEDH92 on Jodah Omniscient Archmage

1 month ago

The deck is finished for now. I will play it a couple times and see what I need to change to improve the deck. One of the cards I am not entirely sure about is Tetzimoc, Primal Death , but I just like it. I might substitute it for Koma, Cosmos Serpent , Maelstrom Wanderer or Urabrask the Hidden . We will see how it performs.

Load more