The Liber Mortis is a 
Tomb Kings ability unique to Arkhan the Black.
One of the fabled nine Books of Nagash, this tome is one of the most potent sources of necromantic magic in existence.
Effect[]
Active Ability- Type: Ward Save (Area)
- Uses: 3
- Physical Resistance: +40%
- Leadership: +8
- Range: 150m
- Effect range: 35m
- Duration: 15s
- Cooldown: 90s
- Affected units: Affects allies in range(all)
