For each unit from this Detachment after the first that is on the battlefield, the range of effect of that unit's Psychic Abomination special rule is increased by 3". For example, If this Detachment includes a total of three units on the battlefield, then all Psykers within 18" of a unit from this Detachment would have -3 Leadership, would not generate any Warp Charge and would only harness Warp Charge points on a 6, and any blessing or malediction psychic powers affecting a unit would immediately cease to be in effect if the unit moves within 18" of a unit from this Detachment, or vice versa
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