This spell can be cast upon an enemy unit that is within 12" of a wood, copse or any other wooded feature on the tabletop which has been identified as such before the game. If there are no such features in range, it can be cast on any enemy unit within 6" of the caster. It cannot be used against a unit that is engaged in close combat. If successfully cast, the unit is battered by the branches of trees if within a wood, or lashed at by roots which erupt from the ground if there is no wood nearby.
This causes D6 Strength 4 hits on the unit, plus a further D6 Strength 4 hits if it is partially or wholly within the wood. This spell does not affect Dryads or Treemen. At the end of the Magic phase the trees are still again or the roots retract back into the earth.