Fervor

Fervor is a passive Crusader skill, unlocked at level 10.

It offers players willing to use a one-handed weapon a compensation for the damage loss for foregoing the use of Heavenly Strength.

Development
Originally, Fervor was to provide a bonus to the Crusader's attack speed after he/she killed a monster (or at least assisted in doing so), for seconds. However, it was reworked later to provide a passive bonus for using one-handed weaponry.