The Changeling

This power can be used in the enemy Shooting phase. Pick any enemy unit visible to the Changeling and is about to fire. If the unit is found to be within 24" of the Changeling, it is affected by his mind-altering mirage.

The unit may choose to hold its fire, and just stand around confused in this Shooting phase without moving. It may instead choose to open fire anyway, trying to see through the Glamour. In this case, the unit must take a Leadership test (vehicles are affected too, but count as Ld 10). If the test is passed, the unit sees through the Glamour and may fire as normal. 

If the test is failed, the unit must immediately fire all its weapons (no holding back!) against a friendly unit, chosen by the Changeling among any of the enemies he can see. If the Changeling cannot see a second enemy unit, the enemy which failed the test will simply stand around confused, as described above.