Willpower

Willpower defines your character's ability to concentrate. It increases the capacity of several resources, and your chance to resist mental and spell attacks.

Gains per point:

Max Mana:       5.00
Max Stamina:    2.50
Max Psi:        1.00 (*)
Mindpower:      0.70
Mental save:    0.35
Spell save:     0.35
Accuracy:       0.35 (only when using Psi combat)

(*) Or more, with various Solipsist talents in effect.

Willpower modifies the effectiveness of many talents.