New dark elixir troop

A suicidal troop that runs up to a defensive building and explodes. It's explosion does little damage but it freezes that defense for 3-6 seconds. No too expensive, has medium health, like a minion. Maybe 5 or 10 housing space. A horde of them won't work, as they will all target the same building (if deployed in the same spot). If more than one is released, they will target the same building and all freeze it (maybe for longer?). If there is a wall in the way it will stand 5 units away until that wall is destroyed by other troops. As a clan castle troop, it will do more damage than freeze time. Give it double damage on defensive buildings.