Poltergeist

The Poltergeist is a creature from the Witchery mod. They appear occasionally when a Summon Banshee or Summon Spectre conjuration is performed with a Brazier. They are invisible and tend to cause mischief. They will open doors, throw objects, opening chests, and attacking players. They will deal about 1 heart, or 2 health points of damage per attack. Poltergeists attack rapidly, and as such can deal a fair amount of damage very quickly. A Brew of Revealing will show the player what they actually appear as, rather than smoke. Poltergeists have 20 health, or 10 hearts of health points, and drop nothing when killed.