Ghost (Warcraft III)

Ghosts are ghost creeps that can be encountered in the Dungeon, Underground and Northrend tilesets.

Pssession

 * Stuns a target unit and the Banshee for 4.5 seconds, during which the Banshee takes extra damage from attacks. She then displaces the soul of the enemy, giving you permanent control of it, but destroying the caster's body. Possession cannot be used on flying units, Heroes, or creeps above level 5.