Record which exact Pal owns each desired passive, then calculate how to consolidate those traits and move them onto the target.
Map each desired trait to a real carrier
Passive planning begins after the target and role are selected. The Build screen offers up to four trait slots and asks which Pal carries each one. Because copies of the same species can have different passives, the calculator keeps the selected carrier identity inside the plan instead of making you catalog every variant in the roster.
The complete passive list on a carrier matters. A Pal chosen for Artisan may also carry an unrelated passive that can travel through the line as baggage. Entering only the desired trait would make the plan look cleaner than the actual parents. The route therefore preserves full donor baggage for warnings while identifying the specific passives to retain.
- Select a target role
Choose a compiled work, combat, traversal, or specialist role when available, or use a custom role entry point for your own four-trait goal.
- Accept or replace four traits
Start from the exact compiled template when one exists, review alternatives and caveats, then replace any slot that does not match your build.
- Confirm exact carriers
For every kept trait, select the actual Pal that owns it; unresolved or declined traits remain visible instead of being treated as available.
Role suggestions are editable evidence, not commands
A recommended template is tied to a specific Pal and role in the compiled data. Its metadata can include an acquisition stage, confidence, alternatives, aggregate effect summary, and caveats. If no compiled build exists for that role, the UI says so and leaves the slots custom rather than manufacturing an ideal.
Full custom is designed for players who already know the desired trait set or want to depart from the recommendation. Quickest path and Start to target can still lead into Build, but their initial question is species reachability. Switching to custom trait selection intentionally changes the problem to carrier consolidation and may produce a longer ancestry.
Worked example: combine two passive lines
Suppose one Lamball copy carries Artisan and Nocturnal while a Cattiva carries Serious and Work Slave. Selecting all four creates two useful starting stacks rather than four imaginary single-trait parents. The solver can preserve the full carrier facts, combine the branches where legal, and label the desired traits to retain as offspring move toward the chosen target.
- A confirmed slot means the selected carrier currently lists that passive; it does not mean inheritance is guaranteed.
- A declined or unresolved slot stays part of the planning state so you can try a compiled fallback or choose another trait.
- Recording a successful two-trait or three-trait hatch can shorten later consolidation because it becomes a new exact carrier.
Passive calculations have honest limits
The calculator plans legal delivery and trait checkpoints, not probability. It does not claim an exact inheritance rate, predict random passives, determine a guaranteed egg count, or simulate mutation mechanics. Possible and guaranteed baggage are warnings based on entered carrier lists, so incomplete roster data can make those warnings incomplete.
Trait names and templates come from the pinned local catalog. Balance changes, newly added passives, and game-version-specific restrictions may arrive after that revision. The tool also does not model souls, condensation, Partner Skills, equipment, food, research bonuses, or every base-layout interaction when recommending a role build.