| Spell type | Defensive buff (green spell) |
| Requires | Dark Lineage, Psionics, Hydra Breed, Regeneration 1+ or Salamanders Gift 1+ |
| Enhanced by | Dark Lineage, Psionics and Hydra Breed give +2.5 regen |
| Casting time | 2 seconds |
| Duration | Depends upon base stat (see below) |
| Enhanced mana cost | 1+ mana to enhance the duration (see below) |
This spell allows you to strengthen your body’s regenerative ability for a number of seconds equal to one of your base stats; Tenacity is used by Dark Lineage and Regeneration, Discipline by Psionics, and Mettle by Hydra Breed and Salamanders Gift. While affected by this spell you will always heal at full regen rate, even if struck by a critical hit (see ‘help healing’).
The enhanced version of this spell costs 1 mana per second, and has a duration equal to the number of seconds required to heal to full health (your base stat is NOT added to this). If you don’t have enough mana to completely heal, the spell will use all of your remaining mana. If the duration is less than or equal to your non-enhanced duration, the spell won’t be enhanced.