Phantom Spirit

The Phantom Spirit is a spooky mob only found in places like the graveyard, wilderness, Spider's Den and Obsidian Sanctuary. This mob attacks rapidly and transforms into the players armor, skin and weapon

Trivia

 * There was a glitch in the game where if you use a sword with the thunderlord enchantment, the lightning strike would instantly kill the Phantom Spirit similar to dealing True Damage, ignoring all of their defense.
 * The weapon you use when it transforms does not carry over the stats to the enemy when they change into you with that weapon