Endurance Aptitude
From LSWiki
Process to Command: will my starshadow aura to enhance my endurance
By attuning your starshadow aura to the rhythms of your physical body, you can reinforce them to gain a boost in your recuperative capabilities, stamina, and toughness. The better your skill at controlling your aura and the higher your ascendancy, the greater the effect.
Extra Notes:
- Upon learning Alacritous Aptitude (and possibly a power skill requirement), this starts also granting stun immunity.