[Altus]

My troops are about to win an independent battle. The Last routed enemy troop leaves the field and there's a sound effect, like a mindbLast, and one of my troops goes poof. There's no mention of a spell being cast and there are no enemies to be seen on the field, battle ends. This has happened twice. Once to a unit who was chasing the Last enemy off the field and now to a casting Commander far to the rear of the enemy rout. She was a standard Machaka Witch Doctor who had just earned her first medal, full health with no diseases or afflictions. Can anyone clue me in to the cause of this? I have screenshots of the battle's end if it would help. Thanks in advance.