Sharks are a blue-centered creature type known mostly for flying Shark tokens and individually strange aquatic threats rather than deep typal support. Dedicated Shark decks tend to combine token generation with generic flying or creature-type bonuses.
Shark Typhoon can turn every noncreature spell into another flying Shark, while Reef Worm eventually dies its way through increasingly enormous sea creatures until finally producing a 9/9 Kraken.
