When this army attempts to dispel, they have a +2 bonus to all dispel attempts. Note that, if this army is fighting alongside a Wizard for whatever reason, this bonus is lost.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
When this army attempts to dispel, they have a +2 bonus to all dispel attempts. Note that, if this army is fighting alongside a Wizard for whatever reason, this bonus is lost.