GREAT FORTITUDE
Type: General, Tier 1.
Benefit: You get a +3 class bonus to Fortitude saves.

IMPROVED GREAT FORTITUDE
Type: General, Tier 2.
Prerequisite: Great Fortitude.
Benefit: Once per day, you can reroll a failed fortitude save. When you do so, you roll 2d20 and take the better result on the reroll.

GREATER GREAT FORTITUDE
Type: General, Tier 3.
Prerequisite: Great Fortitude, Improved Great Fortitude.
Benefit: You can use Improved Great Fortitude once per encounter instead of once per day.