Inefficient Assassin is quite and odd but potentially interesting card. It can be used as a very inefficient but repeatable removal. However, more importantly, it can be used for more interesting strategies by targeting your own Units. If you have an Arrive or Depart or Gravecall actions on a unit that you would find useful to repeat, this can trigger that. Have another card that makes it useful to have things die often, this can be your workhorse.