Liber Heresius

At the start of any friendly turn, the bearer can take a Leadership test. If the test is failed,
nothing happens, but if the test if passed, choose one of the special rules from the list
below. The bearer of the Liber Heresius, and his unit, gain that special rule until the start
of their next turn. The same special rule cannot be gained in this way more than once per
game - you must choose a different special rule each time.
Scouts*
Split-fire
Counter-attack
Fear
Hatred
* Instead of being made at the start of a friendly turn, the Leadership test to use this
special rule is made after deployment, but before the first turn begins.