Transhuman Physiology

Use this Stratagem in any phase, when a Primaris
unit from your army is selected as the target of an
attack. Until the end of the phase, each time an
attack is made against that unit, an unmodified
wound roll of 1-3 for that attack fails, irrespective
of any abilities that the weapon or the model
making the attack may have.
If that unit contains 5 or fewer models, this
Stratagem costs 1CP; otherwise, it costs 2CP.