Set bonuses passives shown at an average roll
- 2pieces+3 ArmorCrab Guard: Your Guards last +1 hit
- 4piecesShell Up: When struck, gain Guard 25%, 20% of the time rolls When struck, gain Guard 25%, 15–25% of the time
- 5piecesPinch Back: When struck while bearing Guard, strike back for 37.5% of your attack as Water (Undertow) rolls When struck while bearing Guard, strike back for 30–45% of your attack as Water (Undertow)
Every piece rolls its own "set roll"; a bonus uses the average of the pieces you wear. Flat stats grow with the set's item level (10–13 here).
The Water pair mix sets, keep the taste
Water Wear pieces from two different Water sets (one piece of each is enough) and your hits put Undertow on their target, 5% of the time.
It counts once however many Water sets you mix, and steps aside if a set you wear already gives its own 2-piece bonus.
Where each piece drops best first
| Piece | From (chance per kill) |
|---|---|
 Crabshell Helm | Captain Clawbeard 3% 1 in 33 Old Salt Crab 2.4% 1 in 42 Sideways Sand Crab 0.8% 1 in 125 Squatting Hermit Crab 0.8% 1 in 125 |
 Crabshell Carapace | Captain Clawbeard 3% 1 in 33 Old Salt Crab 2.4% 1 in 42 Sideways Sand Crab 0.8% 1 in 125 Squatting Hermit Crab 0.8% 1 in 125 |
 Crabshell Greaves | Captain Clawbeard 3% 1 in 33 Old Salt Crab 2.4% 1 in 42 Sideways Sand Crab 0.8% 1 in 125 Squatting Hermit Crab 0.8% 1 in 125 |
 Barnacle Band | Captain Clawbeard 3% 1 in 33 Old Salt Crab 2.4% 1 in 42 Sideways Sand Crab 0.8% 1 in 125 Squatting Hermit Crab 0.8% 1 in 125 |
 Crabclaw Mace | Captain Clawbeard 3% 1 in 33 Old Salt Crab 2.4% 1 in 42 Sideways Sand Crab 0.8% 1 in 125 Squatting Hermit Crab 0.8% 1 in 125 |
Set pieces never come from random drops or shops, only from their theme's own sources. The zone boss and promoted foes (Champions and Elites) carry the whole set.