Giant Koi
Tracked across real Commander games played through TurnZero HQ.
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What it does
Waterbend 3: This creature can't be blocked this turn. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.)
Islandcycling 2 ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)
Rulings
5 official rulings, in the order Wizards published them.
- 2025-10-02
If a waterbend cost is part of the total cost to cast a spell or activate an ability, you may tap an untapped artifact or creature you control rather than pay one generic mana in that total cost any number of times up to a maximum of the amount of generic mana in the waterbend component of that total cost.
- 2025-10-02
Even if the cost of the spell or ability that waterbend is part of increases or decreases, you still may only tap artifacts or creatures to pay for costs up to the amount of the generic mana in the waterbend cost.
- 2025-10-02
"Waterbend [cost]" means "Pay [cost]. For each generic mana in that cost, you may tap an untapped artifact or creature you control rather than pay that mana."
- 2025-10-02
If an artifact or creature you control has a mana ability with T in the cost, activating that ability while casting a spell or activating an ability with waterbend will result in the artifact or creature being tapped before you pay the spell's costs. You won't be able to tap it again for waterbend. Similarly, if you sacrifice an artifact or creature to activate a mana ability to pay a cost with waterbend, that artifact or creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for waterbend.
- 2025-10-02
You can tap any untapped creature or artifact you control to pay a waterbend cost, even one you haven't controlled continuously since the beginning of your most recent turn.
Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.
In the 99
Every deck whose current list includes Giant Koi, whatever its commander.
Most played under
| Commander | Decks | Games | Win rate |
|---|---|---|---|
| Hylda of the Icy Crown | 1 | 0 | — |
Colors it shows up in
- Azorius 1 deck
Giant Koi price history
The Avatar: The Last Airbender #53 printing, as Scryfall reports the TCGplayer market. Updated nightly. Click any version below to chart its price.
Every recorded price change
| Date | Non-foil | Foil |
|---|---|---|
| Oct 27, 2026 | $0.08 | $0.24 |
| Oct 24, 2026 | $0.09 | $0.24 |
| Oct 23, 2026 | $0.10 | $0.24 |
| Oct 21, 2026 | $0.14 | $0.23 |
| Oct 19, 2026 | $0.14 | $0.25 |
| Oct 17, 2026 | $0.15 | $0.25 |
| Oct 16, 2026 | $0.14 | $0.25 |
| Oct 14, 2026 | $0.13 | $0.23 |
| Oct 11, 2026 | $0.13 | $0.22 |
| Oct 9, 2026 | $0.12 | $0.22 |
| Oct 5, 2026 | $0.12 | $0.21 |
| Sep 30, 2026 | $0.12 | $0.22 |
| Sep 29, 2026 | $0.14 | $0.22 |
| Sep 28, 2026 | $0.12 | $0.21 |
A row is recorded only on nights the price moved, so each price held until the row above it.
Every version of Giant Koi
1 printing, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them.
- Normal
- $0.08
- Foil
- $0.24
Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Giant Koi. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.
Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.
