Heart of the Immovable King
What it does
- -20% Sanity drain
How to get it
Passives are rolled when a Pal is caught or hatched, and parents can pass theirs on through breeding — breed two Pals that both carry Heart of the Immovable King for the best odds. It can also be added with the Heart of the Immovable King surgery implant.

Take the calculator with you
The free Android app has every calculator, the full Paldex and an interactive map, and it works offline.
