User becomes stronger, faster, more durable, etc. when a taboo is placed on them and possibly unlocking abilities and enhancing their existing powers. This may work from Contract Bestowal or placing a taboo on ones own powers to focus ones energy on other attributes of their abilities to make them stronger.
- Decelerated Aging/Semi-Immortality
- Enhanced Condition or Supernatural Condition
- Self-Power Augmentation
- User may lose power if the taboo is lifted or committed.
- Hunters (Hunter X Hunter)