If this character has joined a unit of Orcs with a Unit Strength of 10 or more, they may apply a +1 modifier to any Casting roll they make. Should they leave the unit for any reason, or should the unit's Unit Strength fall below 10, this modifier is lost.

Note that, for the purposes of this rule, a unit of Orcs is considered to be any unit that is made up entirely of Orcs or Black Orcs, mounted or otherwise.