Destroy, while being mostly a partnered ability, has another name - Assassinate which serves the same purpose. Destroy is an ability that causes random unit(s) to receive infinite damage immediately, causing itself to reach zero health and go to graveyard. As it is counted as a normal kill animated would be triggered.
Some versions of Destroy will kill allied units. Although Destory (or Assassinate) cannot affect immune enemy units, it is able to kill friendly immune units. Assassinate all will kill all units in play, precisely speaking, all units except enemy immune units as forementioned.