Unlock a special war casus belli, enabling immediate declaration of war after denouncing a target, with Grievance -75%. Military units gain +7 Combat Strength. Production of military units is +100% faster.
Normal Age
In battle, each non-barbarian Legion killed provides +1 Era Score, each non-barbarian Army killed provides +2 Era Score.
Dark Age
In battle, each non-barbarian Legion killed provides +1 Era Score, each non-barbarian Army killed provides +2 Era Score.