Beseech the Gods

Heretic Astartes Tactic
Use this Tactic at the start of the first
battle round.
Pick a model from your kill team and roll a D6.
On a 1 that model is found unworthy and suffers
a D3 mortal wounds. On a 2+ add 1 to hit
and wound rolls for the model
until the end of the battle.
You can only use this Tactic once per battle.