Player > Feats > Corruption's Gift
You have embraced your corruption.
One or more corruption manifestations (see pages 40-45 of Starfinder Adventure Path #10: The Diaspora Strain).
Choose one of your manifestations and make its gift permanent. If you're ever cured of your corruption, you lose the stain but not the gift. You can take this feat multiple times, making a diffe ent gift permanent each time you do so. Each instance of this feat counts as a manifestation you have for calculating the save DC for corruption.