Passive Skill & IV Simulator

When two parent Pals breed, their unique passive traits are combined into a single candidate pool. The game rolls to determine how many passive slots (1 to 4) the offspring will inherit (40% chance for 1 slot, 30% for 2 slots, 20% for 3 slots, 10% for 4 slots). The selected slots are then randomly filled from the candidate pool. Empty slots also have a small ~5% independent chance to mutate into random standard passives.

Yes! Although the Legend trait naturally spawns only on the 4 wild Legendary Pals (Jetragon, Frostallion, Paladius, and Necromus), it can be bred down to any breedable Pal species in the game through cross-species breeding chains. Once an intermediate child inherits Legend, it can act as a parent to pass the trait further down the lineage.

The mathematically optimal setup is the Clean 2+2 or Clean 4+0 configuration, where both parents combined have exactly the 4 desired traits and zero unwanted junk traits. This creates a candidate pool size of exactly k = 4, yielding the maximum possible 10.0% probability per egg. Introducing even one unwanted trait increases the pool to k = 5 and cuts the probability down to 4.8%.

Yes, through random mutations. Every empty passive slot on an egg has an independent ~5% mutation chance to roll any standard passive in the game, including Tier 3 Gold/Rainbow passives like Swift, Musclehead, or Artisan. However, exclusive legendary traits (like Legend or Siren of the Void) cannot mutate randomly and must be inherited directly from a parent carrying them.

Each stat (HP, Attack, Defense) is rolled independently during breeding. If both parents have 100 IV in a stat, the offspring has a 60.4% chance to inherit 100 IV. If only one parent has 100 IV, the inheritance chance is 42.8%. If neither parent has 100 IV, the offspring has an 18.2% chance to randomly roll an optimal stat.

Max-ranking a Pal to 4-Stars using the Pal Essence Condenser requires a total of 116 duplicate Pals (4 for 1-Star, 16 for 2-Stars, 32 for 3-Stars, and 64 for 4-Stars). Since every breeding farm cycle consumes exactly 1 Cake per egg, you will need a minimum of 116 Cakes to complete a 4-star project.

When parents carry more than 4 unique passives combined, the candidate pool becomes bloated (k >= 5). Because the child only has 4 slots, unwanted junk traits compete for selection, drastically diluting the odds of inheriting all 4 desired skills down to 4.8% (at k = 5) or 2.1% (at k = 6).