Use Wegadas' portal to the druid ring or fly there.
Use the wand on an ethershade. Note: Some people have had trouble if their combat option is set to forced-ranged, particularly mages. They would auto-attack before the wand would complete casting. Changing the combat option on the Character screen to automatic until this quest is completed will allow the wand to work on the ethershade.
Tell it to attack another ethershade. You can force it to attack or release it, either way the quest will update.