Unless it is fleeing or engaged in combat, a unit with this special rule must make a Stupidity test by testing against its Leadership during the Start of Turn sub-phase of each of its turns. If this test is failed, the unit succumbs to Stupidity until its next Start of Turn sub-phase. A unit that has succumbed to Stupidity:

• Cannot move.

• Cannot shoot or cast spells.

• Cannot attempt a Wizardly dispel.

• Must Hold if charged by an enemy.

A unit or mount that does not have this special rule becomes subject to it when joined or ridden by a character that does (Stupidity is contagious).