| Name | Edition | Colour | Type | Cost | Power | Rarity | $ |
|---|---|---|---|---|---|---|---|
| Benthicore | LW | Blue | Creature - Elemental | 6U | 5/5 | Uncommon | 0.26 |
| Blizzard Elemental | UD | Blue | Summon Creature - Elemental | 5UU | 5/5 | Rare | 0.65 |
| Bringer of the Blue Dawn | FD | Blue | Creature - Bringer | 7UU | 5/5 | Rare | 2.80 |
| Cerulean Sphinx | RA | Blue | Creature - Sphinx | 4UU | 5/5 | Rare | 0.55 |
| Chained Throatseeker | NP | Blue | Creature - Horror | 5U | 5/5 | Common | 0.15 |
| Deep-Sea Serpent | PO | Blue | Summon Creature | 4UU | 5/5 | Uncommon | 0.37 |
| Dormant Gomazoa | RE | Blue | Creature - Jellyfish | 1UU | 5/5 | Rare | 0.50 |
| Greater Morphling | UH | Blue | Creature - Shapeshifter | 6UU | 5/5 | Rare | 2.59 |
| Harbor Serpent | M11 | Blue | Creature - Serpent | 4UU | 5/5 | Common | 0.11 |
| Harbor Serpent | M12 | Blue | Creature - Serpent | 4UU | 5/5 | Common | |
| Kederekt Leviathan | SA | Blue | Creature - Leviathan | 6UU | 5/5 | Rare | 0.53 |
| Keiga, the Tide Star | CK | Blue | Legendary Creature - Dragon Spirit | 5U | 5/5 | Rare | 4.99 |
| Phantasmal Abomination | RE | Blue | Creature - Illusion | 1UU | 5/5 | Uncommon | 0.19 |
| Phantasmal Dragon | M12 | Blue | Creature - Dragon Illusion | 2UU | 5/5 | Uncommon | |
| Quicksilver Dragon | ON | Blue | Creature - Dragon | 4UU | 5/5 | Rare | 1.91 |
| Quicksilver Dragon | DDJC | Blue | Creature - Dragon | 4UU | 5/5 | Rare | 1.02 |
| Saprazzan Outrigger | MM | Blue | Creature - Ship | 3U | 5/5 | Common | 0.14 |
| Scrapdiver Serpent | SO | Blue | Creature - Serpent | 5UU | 5/5 | Common | 0.11 |
| Shoal Serpent | ZE | Blue | Creature - Serpent | 5U | (5/5) | Common | 0.12 |
| Sphinx Ambassador | M10 | Blue | Creature - Sphinx | 5UU | (5/5) | Mythic | 1.07 |
| Sphinx of Jwar Isle | ZE | Blue | Creature - Sphinx | 4UU | (5/5) | Rare | 1.05 |
| Tidespout Tyrant | DI | Blue | Creature - Djinn | 5UUU | 5/5 | Rare | 1.30 |
| Wormfang Behemoth | JU | Blue | Creature - Nightmare Beast | 3UU | 5/5 | Rare | 0.68 |