22.01Aura Abilities
Abilities that affect models or units within a stated range are aura abilities, and are tagged with the word ‘Aura’. While a model with an aura ability is on the battlefield, it is always within range of its own aura ability. A unit can be affected by more than one aura ability at a time, but if a unit is within range of the same aura ability more than once, that aura ability only applies to that unit once.