Ozomoto wrote:Do relics etc effect aura abilities gained form stratagems, example
"PRIMARIS model only. If a model has this Relic, add 3" to the range of its aura abilities (e.g. Rites of Battle). This does not increase the range of psychic powers or Litanies of Battle that are aura abilities."
"Use this Stratagem at the start of your opponent’s Shooting phase. Select one SALAMANDERS INFANTRY unit from your army. Until the end of that phase, enemy units cannot target any other INFANTRY units from your army that are within 6" of the selected unit, unless that unit is the closest enemy unit to the firing unit and visible to it"
In this particular case, it does, because the relic "add[s] 3" to the range of its aura abilities", with no further restrictions.
Compare this to the Astra Copywritum Warlord Trait "Bellowing Voice" that states "Add 3" to the range of any
abilities on your Warlord’s datasheet..." which would not boot auras granted by Stratagems or Relics.