Reroll tool
Star Shards Reroll Odds Calculator
Each race reroll costs Star Shards. Enter the draw chance of the race you want to see how many rerolls (and Star Shards) you realistically need. A rare race is never guaranteed - plan around the 90% line, not the average.
Checked 2026-05-24
Lucky pulls cost more Star Shards but improve odds; set the chance and cost to match the pull type you use.
Result
0% in 100 rerolls
Expected rerolls
0
For 90%
0
Shards for 90%
0
Chance after N rerolls
| Rerolls | Chance | Star Shards |
|---|
How reroll odds work
Every reroll is independent, so the chance of landing your race at least once in N rerolls is 1 - (1 - chance)^N. With a 0.1% race like Kraken, the average is 1,000 rerolls and you still need about 2,300 for a 90% chance - that is why most players bank Star Shards and only commit once their money route can refill the cost. Use the 90% and 99% lines to set a hard budget before you start spending.