Ghazghkull Waaagh!
(Rule)Description: Once per game Ghazghkull may call a Waaagh! at any time, even during the opponents turn. As soon as he calls the power of the Waaagh, any fleeing Ork models immediately rally. For the remainder of the turn and all of the following turn he is immune to any damage - he cannot be harmed in any way at all - and all Orks (including Ghazghkull himself) receive a +1 modifier in close combat