A Tomb Kings army is led by the mummified Tomb Kings themselves and supported by the Liche Priests. A Tomb King can be mounted in a chariot or even on a Khemrian Warsphinx. You can also field him on foot where his special 'My Will Be Done' rule means that every other model in the unit he is accompanied by will share his WS of 6.
taken from: http://www.games-workshop.com/gws/conte ... ue&start=3
so they have a built in helm of command! WS 6 tomb guard coming up!