Luck in Sailor Piece controls how often rare drops appear when farming bosses, NPCs, dungeons, and artifacts. Every player starts at 100% base luck, and the rest of the build is about layering multipliers from your race, clan, title, rune, ascension, skill tree, spec passive, power, upgrades, and game passes. Stacked correctly, the total sits near 700% solo and roughly 1,400% during a 2x luck event with the 2x luck game pass active.
Luck sources and percentage values
Each piece of the build adds either a flat luck percentage, a multiplier, or a chance for an extra drop. The numbers below reflect the maxed value for each source.
| Source | Max value | Where to get it |
|---|---|---|
| Base luck | 100% | Default for every account |
| Stat reroll (Z on luck) | +12% | Stat NPC on Sailor Island (costs gems) |
| Title - Celestial Favor | +50% | Defeat 5,000 bosses on Boss Island |
| Race - Luckborn | +35% | Race rerolls (highest luck multiplier) |
| Clan - Eminence | +12% luck, 25% chance for +1 drop | Clan rerolls |
| Ascension (level 10) | ~50% (5% per level) | Ascension NPC, requires materials |
| Radiant Rune (level 60) | +28% | Infinite Tower, higher floors |
| Skill tree (luck path) | +15-25% | Skill tree NPC on Slime Island |
| Spec passive - Fortune Chosen | 5-10% luck, 17.5-30% +1 drop chance | Spec passive roller, Judgment Island |
| Power - Colossus | 7.5-15% | Power NPC on Lawless Island |
| Boss Rush upgrades | +15% | Sailor Island boss rush coins |
| Infinite Tower upgrades | +15% | Tower Island tower coins |
| 2x Luck game pass | x2 multiplier | 649 Robux |
| 2x Luck event | x2 multiplier | Active in-game events |
Race and clan choice
Luckborn is the strongest luck race at +35%, and it is the priority pick if you can land it on a reroll. Kitsune is a viable fallback at +25% luck, and pairs well with Eminence because Kitsune also boosts sword damage, which keeps your build relevant in boss rush.
For the clan, Eminence is the answer for a pure luck setup. The 12% luck is modest on its own, but the 25% chance for a +1 drop is what makes it the best farming clan in the game. Combined with Fortune Chosen's +1 drop chance, you can hit triple drops on a single kill when both procs land.
Title: Celestial Favor
Celestial Favor is the highest luck title and contributes a flat +50%. It unlocks after defeating roughly 5,000 bosses. The fastest path is to teleport to Boss Island, talk to the boss summoner, spawn knights repeatedly, and use auto-skill to AFK farm them while you do other things.
Until Celestial Favor unlocks, equip whatever lower-tier luck title you currently have rather than running with no title at all.
Radiant Rune from the Infinite Tower
The Radiant Rune adds +28% luck once leveled to 60. It drops from the Infinite Tower, with drop rates increasing on higher floors. Floor 30 is the minimum reasonable target, but floor 60 and above gives a much better chance.
Once obtained, complete the rune dungeon repeatedly to push it to max level. Skipping this rune is the single biggest hole in any luck build.
Ascension and skill tree
Each ascension level grants roughly 5% luck, and ascension 10 is the current cap. Trading for ascension materials is the practical route, since farming them all from scratch takes much longer than using the trade market.
The skill tree NPC on Slime Island is often overlooked. Points come from killing NPCs (around one point per 30 kills), and the late luck nodes cost a lot of points individually. Investing the full luck path adds 15-25% depending on how many nodes you unlock, and it is worth pushing first before crit or HP nodes if you're building purely for drops.
Spec passive: Fortune Chosen
Fortune Chosen is rolled at the spec passive NPC on Judgment Island. Roll on whatever spec weapon you actually use, since the passive is bound to that weapon type. The roll is randomized within a range, so you may need multiple attempts to get high values.
The two stats that matter on this passive are the luck percentage (5-10%) and the +1 drop chance (17.5-30%). Stack the +1 drop chance against Eminence's 25%, and you reach a combined ~55% chance for an extra drop on every kill.
Power: Colossus over Curse
The power system on Lawless Island lets you roll powers using power shards, which drop from any NPC on the map. For a luck build, Colossus is the target. It rolls between 7.5% and 15% luck depending on the roll quality, and it is the only mythic power that contributes to the luck stat directly.
Stat reroll for Z on luck
Stat rerolls happen at the stat NPC on Sailor Island and cost gems. Z is the highest tier and gives 12% luck on the luck stat slot. SSS gives 10% and is acceptable if gems are scarce. Anything below SSS is worth rerolling when you can afford to.
Boss Rush and Infinite Tower upgrades
Both modes have separate upgrade trees that include luck. Each one caps at +15% luck after about five upgrade tiers, for a combined +30% across both. Coins come from running the modes themselves on whatever difficulty you can clear, with extreme paying significantly more per run than normal.
If you don't have a damage build for solo runs yet, AFK methods using King of Heroes or Stronger Shinobi melee on the safe ledges of each map let you grind upgrade currency without dying. Auto-replay must be enabled or the run will not loop.
2x Luck game pass and event stacking
The 2x Luck game pass costs 649 Robux and doubles your total luck stat. Without it, a fully built character maxes out around 700% during normal play. With it active, the same build sits at roughly 1,400% during a 2x luck event because the multipliers compound.
What to farm with the build equipped
Once luck is stacked, three farming spots return the most per minute:
- Lawless Island for legendary artifacts. Stand on top of the tree, hold True Manipulator (or Griffin X), and turn on auto-C to clear the surrounding NPCs without taking hits.
- Shinjuku Island green patch for materials. Stand in the corner aligned with both NPC lanes and use Quake C to hit roughly 10 NPCs at once on each cycle.
- Boss Rush and Infinite Tower for clan rolls, gems, and boss drops. These give the highest clan roll yield in the game when run with a luck build plus King of Heroes for damage.
How to verify the build is working
Open the stats menu and check the luck panel. Each contributing source should show its individual percentage on the breakdown. The total at the bottom should land near 700% without the 2x pass and event, and near 1,400% with both active. If a slot reads 0%, that piece isn't equipped or hasn't been unlocked yet.
In gameplay, you should see frequent x2 and x3 multipliers on dungeon keys, materials, and trade drops. Triple drops on a single hit confirm that Eminence and Fortune Chosen are both proccing as expected.
The luck build takes longer to assemble than a damage build because so many of its pieces (Radiant Rune, Celestial Favor, ascension 10, Z stats) are end-game grinds on their own. The payoff is that everything else in the game gets faster once it's done, since most progression in Sailor Piece comes down to how often rare items drop.