Koma wants a deck that sacrifices its own creatures to drain opponents' life. It also suits a deck that gives up its own cards on purpose to get something back.
Mana cost
Blue, Green ()
Power / toughness6 / 6
RarityMythic
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.
Picked for what they do in Koma's deck. When two cards do the same job, the one with the lower comes first. All of them fit Koma's color identity.Mana ValueThe total amount of mana a card costs, all added up. A card costing two generic and one green has a mana value of three. Wizards renamed this from "converted mana cost" in 2021, so older cards and articles may still use the old name.Open the full glossary
explain how Koma works in tricky situations. They come from Wizards of the Coast, the company that makes Magic.RulingThe official answer to how a card works in a tricky situation. Most rulings are written by Wizards of the Coast, the company that makes Magic, and a few are notes from Scryfall, the card database Magic players use. A ruling explains a card. It does not change what the card says.Open the full glossary
Wizards of the Coast5 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.
Wizards of the Coast5 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.
Wizards of the Coast5 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.
Wizards of the Coast5 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.
Wizards of the Coast5 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.
Color identityEvery color of mana symbol on a card, in its cost and in its rules text. Your commander's color identity sets the limit for your whole deck: every other card has to fit inside it. A deck led by a green and white commander cannot play a card with any blue in its color identity.Open the full glossaryUGPlayers write colors as letters: U for blue, G for green. Blue is U because B was already taken by black.AristocratsAristocrats decks sacrifice their own creatures on purpose and profit every time one dies, often by draining life from each opponent. A sacrifice outlet, a card that lets you sacrifice whenever you like, decides when that happens.Open the Aristocrats pageSacrifice OutletA permanent that lets you sacrifice your own creatures or artifacts whenever you want, usually for free. Every Aristocrats deck needs one, because cards that reward a creature dying only help if you choose when it dies. Ashnod's Altar, Viscera SeerOpen the Sacrifice Outlet pageToken EngineMakes tokens again and again rather than once. A token is a creature or other permanent created by a card, with no card of its own. Something that makes one token gives you a body; something that makes them every turn gives you a board you can keep rebuilding after it is cleared. Grave Titan, Bitterblossom, OphiomancerOpen the Token Engine pageToken MakerCreates one or more tokens. Different cards make very different ones: creatures Grave Titan, Treasures Smothering Tithe, Clues Tireless Tracker or Food Gilded Goose. This is one of our largest tags, so pair it with an archetype or theme when you are hunting a specific kind.Open the Token Maker pageSacrificeSacrifice decks give up their own creatures, Treasures and other cards on purpose and get something back each time. A sacrifice outlet, a card that lets you sacrifice whenever you want, is the heart of the deck.Open the Sacrifice pageStaxStax decks slow the whole game down with cards that make spells cost more, stop lands from untapping, or limit what players can do each turn. The deck is built so those limits hurt it least. Many groups dislike playing against it, so check with your table first.Open the Stax pageStax/TaxMakes the game more expensive or more restrictive for everyone: taxing spells and attacks, or stopping permanents from untapping. Propaganda, Ghostly Prison. Many groups dislike playing against it, so check what your table expects first.Open the Stax/Tax pageSea MonstersKrakens, Leviathans, Octopuses and Serpents: the big creatures of the sea, almost all blue.Open the Sea Monsters pageProtectionA creature with protection from something, like a color, is safe from anything with that quality. It cannot be damaged, enchanted or equipped, blocked, or targeted by it, and players remember the four with the word DEBT. It does not stop effects that neither target nor damage, like a board wipe that destroys every creature. ProgenitusOpen the Protection page
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