Mortal Struggle

Mortal Struggle is a Death Protection spell that, after receiving a fatal blow, the magic user can reconstruct parts of their body to heal otherwise fatal wounds to enter a temporary state of "overtime". After this "overtime" elapses, the user will collapse to physical exhaustion depending on their Physical Endurance. It is extremely difficult to use Mortal Struggle to perfectly repair the body, but at least enough to continue fighting for a while longer.

Being a spell that highly correlates to survival, this is a highly desirable but very difficult spell to practice in a safe environment, let alone pull off in real combat without slipping up and making a mistake. Failing a Mortal Struggle due to mentally blocking to depletion of Mental Endurance will result in either a salvageable body that is too hurt to fight, or death happening anyway.

Binary is a notable example who is able to naturally use Mortal Struggle without understanding the exact mechanics of it, due to her resonating so well with the universal concepts of Determination, Survival and Heroism all at the same time. Due to this sheer resonance, Binary is able to cast up to Mortal Struggle way up her normal combat tier, which would be a HyperMass I Mortal Struggle - which would be a mortal struggle powerful enough to get back together even after being blown to pieces, although not powerful enough to get back together from being vaporized.