Enhanced Bionics

Use this Stratagem before the battle begins.
Pick a unit of SERVITOR MANIPLE
KATAPHRON BREACHERS or
SERVITOR MANIPLE KATAPHRON
DESTROYERS from your army. That unit
has a 5+ invulnerable save for the duration
of this battle.
These Kataphron servitors have had their bionics reinforced and augmented to offer greater protection
in battle.