Devolve

The Bray-Shaman magnifies the savage and
animalistic parts of the foes' psyche.
Pick an enemy unit within 18" of the caster
that is visible to them and not within 3" of any
friendly units. Your opponent must move that
unit up to 2D6" so that each model in the unit
ends its move as close as possible to a model from
the friendly unit that was closest to it at the start
of the move.