Traits in Roblox Shells are passive modifiers attached to claws and sifters. They change how fast you finish the collection minigame, how often mutated shells appear, how heavy each shell sells for, and how lucky your finds become. There are 27 traits in the rotation, and you can reroll them at any time using one of two currencies.
Quick answer: Open your equipment bag (hotbar button or press 2), click the sparkling stars icon next to the claw or sifter you want to modify, then press the pink x100 button to spend 100 pearls for a normal roll, or the green x1 button to spend a lucky reroll for higher rare-trait odds.
Shells trait list with normal and lucky drop rates
Each trait has a fixed probability on every roll. Normal rolls use pearls; lucky rolls bias the table toward stronger outcomes, which is why top-tier traits like Celestial, Transcendent, Rake, and All or Nothing roughly double in chance under lucky rolls. The full table sorted from highest to lowest normal drop rate is below.
| Trait | Effect | Normal | Lucky |
|---|---|---|---|
| Nimble | Cuts collection minigame time by 5%. | 9.4% | 6.1% |
| Tainted | +5% mutation chance. | 9.4% | 6.1% |
| Packed | +5% shell weight, raising average sell value. | 9.4% | 6.1% |
| Sharp Eye | +5% luck. | 9.4% | 6.1% |
| Heavy Lifter | +20% shell weight. | 6.1% | 5.1% |
| Accelerated | -20% minigame time. | 6.1% | 5.1% |
| Lucky | +20% luck. | 6.1% | 5.1% |
| Mutant | +20% mutation chance. | 6.1% | 5.1% |
| Sturdy | +5% to all core stats. | 6.1% | 5.1% |
| Honed | +15% to all core stats. | 3.8% | 4.2% |
| Refined | +30% to all core stats. | 2.8% | 3.7% |
| Streak | +3% luck per collect since the last rare shell, up to +60%. | 2.8% | 3.7% |
| Underdog | Up to +40% to all stats based on how empty your inventory is. | 2.8% | 3.7% |
| Chain | +40% luck for 10 seconds after each rare shell. | 2.4% | 3.2% |
| Obsessed | +5% to all stats per minute in the same zone, capped at +35%. | 2.4% | 3.2% |
| Hungry | +2% luck per idle second since the last collect, up to +50%. | 2.4% | 3.2% |
| Veteran | +1% to all stats per 100 lifetime shells collected, up to +50%. | 1.9% | 2.8% |
| Night Owl | +35% to all stats during the night cycle only. | 1.9% | 2.8% |
| Refined Taste | Removes common shells from the drop pool. | 1.9% | 2.8% |
| Blessed | Removes common and uncommon shells from the drop pool. | 1.9% | 2.8% |
| Pristine | +50% to all core stats. | 1.6% | 2.3% |
| Last Stand | +60% luck when inventory is at least 90% full. | 1.4% | 1.9% |
| Dawn Breaker | +50% luck during the ~60-second sunrise window. | 1.4% | 1.9% |
| Celestial | +80% to all core stats. | 0.24% | 0.47% |
| Transcendent | +150% to all core stats and ignores normal stat caps. | 0.024% | 0.094% |
| Rake | Collects one extra shell per sweep. | 0.024% | 0.094% |
| All or Nothing | Every shell is either legendary+ or the lowest rarity in the area. | 0.024% | 0.094% |
How pearl rerolls work in Shells
Pearls are the standard reroll currency. You earn them from quests, level-up rewards, redeemed codes, and special chests handed out during admin events. Pearl bundles are also sold in the in-game shop for Robux if you want to skip the grind.
Step 1: Open the equipment bag. Press 2 on your keyboard, or click the bag button on the hotbar.
Step 2: Select the tool you want to modify. Find the claw or sifter you plan to keep long-term and click the sparkling stars icon next to it. Avoid rerolling tools you will soon replace.
Step 3: Spend 100 pearls per roll. Click the pink x100 button. A new trait is drawn from the normal drop table immediately and overwrites whatever is in the active slot, so move any keeper trait into a saved slot first.
How lucky rerolls work in Shells
Lucky rerolls (sometimes called clovers) shift the probability table toward rarer outcomes. They are not for sale in unlimited stacks, so they only show up from special quest rewards, time-limited events, codes, or limited Robux purchases.
Step 1: Open the equipment bag from the hotbar or by pressing 2.
Step 2: Click the sparkling stars icon beside the claw or sifter you want to roll on.
Step 3: Spend one lucky reroll. Click the green x1 button to consume a single lucky roll. The result uses the lucky column rates shown in the table above, which roughly doubles your odds at Celestial, Rake, Transcendent, and All or Nothing compared to a pearl roll.
Trait storage and saving good rolls
Every tool can hold one trait by default. If you roll something better than what is currently equipped, you can store it before spinning again so a bad result does not overwrite the good one. The Big Trait Bag game pass raises that storage limit to five traits per tool, which lets you keep specialized loadouts (for example, a mutation setup, a luck setup, and a speed setup) on the same claw.
Pity meter behavior
Shells displays a pity meter on the reroll screen, but it does not change the actual drop chances. Outcomes are pulled directly from the normal or lucky rate table on every roll, independent of how many previous rolls you have spent. Treat the meter as a cosmetic counter rather than a guaranteed pity system.
Picking the right trait for your build
Best-in-slot picks depend on what you are farming. Use the matrix below as a quick reference when deciding whether to keep a roll or burn another reroll.
| Playstyle | Priority traits |
|---|---|
| Rare shell hunting | Blessed, Refined Taste, Lucky, Celestial, Pristine |
| Mutation farming | Mutant, Tainted, Night Owl, Celestial, Transcendent |
| Money per inventory clear | Heavy Lifter, Packed, Pristine |
| Speed and throughput | Accelerated, Rake, Nimble |
| Long grinding sessions | Veteran, Obsessed, Streak, Chain |
| End-game all-rounder | Transcendent, Celestial, Pristine, Refined |
The reroll loop in Shells comes down to picking a tool you will keep long-term, stockpiling pearls for volume and lucky rerolls for the rare-trait spikes, and locking in any S-tier hit before pressing the button again. Once you land Transcendent, Rake, Celestial, or a stat-stacking Pristine on your endgame claw, additional rolls almost always make the build worse, so stop and save your remaining currency for a future tool.