All enemies suffer -1 on all attempts to rally. Enemies within 6" of Be'lakor suffer -1 to any Leadership-based tests they take (so an enemy within G" of Be'lakor suffers -2 to rally!).
Source: Warhammer Fantasy: 6th Edition
All enemies suffer -1 on all attempts to rally. Enemies within 6" of Be'lakor suffer -1 to any Leadership-based tests they take (so an enemy within G" of Be'lakor suffers -2 to rally!).