The Horn of Kygor

 is a enchanted item in Total War: Warhammer II.

Description
It is said that the legendary Kygor, the first owner of the horn, was a warrior who could stare down a Carnosaur!

Effects

 * Type: Augment, instantly affects targets in area
 * Duration: 20 Seconds
 * Target: Self, allies in range
 * Effect Range: 40m
 * +18% Charge bonus
 * +25 Melee attack
 * +8 Leadership

Source
https://www.youtube.com/watch?v=dG1fu6-Ejek