Giant Koi

four generic mana one blue mana Creature — FishPower and toughness5/7

Waterbend three generic mana : 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 one generic mana .)

Islandcycling two generic mana (, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

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0.12 $

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6 printings

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Giant Koi rulings

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
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.
2025-10-02
If an artifact or creature you control has a mana ability with 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
"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 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.

Giant Koi keyword rules

Cycling Rule 702.29

Cycling is an activated ability that functions only while the card with cycling is in a player’s hand. “Cycling [cost]” means “[Cost], Discard this card: Draw a card.”

Although the cycling ability can be activated only if the card is in a player’s hand, it continues to exist while the object is on the battlefield and in all other zones. Therefore objects with cycling will be affected by effects that depend on objects having one or more activated abilities.

Some cards with cycling have abilities that trigger when they’re cycled. “When you cycle this card” means “When you discard this card to pay an activation cost of a cycling ability.” These abilities trigger from whatever zone the card winds up in after it’s cycled.

Some cards have abilities that trigger whenever a player “cycles or discards” a card. These abilities trigger only once when a card is cycled.

Typecycling is a variant of the cycling ability. “[Type]cycling [cost]” means “[Cost], Discard this card: Search your library for a [type] card, reveal it, and put it into your hand. Then shuffle your library.” This type is usually a subtype (as in “mountaincycling”) but can be any card type, subtype, supertype, or combination thereof (as in “basic landcycling”).

Typecycling abilities are cycling abilities, and typecycling costs are cycling costs. Any cards that trigger when a player cycles a card will trigger when a card is discarded to pay an activation cost of a typecycling ability. Any effect that stops players from cycling cards will stop players from activating cards’ typecycling abilities. Any effect that increases or reduces a cycling cost will increase or reduce a typecycling cost. Any effect that looks for a card with cycling will find a card with typecycling.