Endurance Reserve, 50 END, 2 recovery per 5 hours (-1).
7 active points, 4 real cost.
Druids may buy 10 points of mana per point of EGO over 10, plus 10 points per Druid level.
Rangers may buy 10 points of mana per point of EGO over 10, plus 10 points per Ranger level over 2nd.