Phantom Zant

The mini-boss of the Palace of Twilight, it is encountered twice, and is also seen early in the dungeon. It will start by throwing a ball of dark matter. The ball will then spawn a large numbers of various Twilit Monsters including Shadow Keese, Shadow Deku Babas, and Shadow Beasts. After Link has killed all the spawned monsters, or the monsters have remained for a long time, Zant's Phantom will continue to warp around the room (as he had been while Link was distracted by the monsters). At some point he will temporarily stop, then prepare to spawn more monsters. It is at this time Link can attack Zant's Phantom the most efficiently. He will not have much time to do so, as Zant's Phantom does not take long to create more monsters. Zant's Phantom could also mirroring  Phantom ganon due to some similarities Each time after defeating Zant's Phantom, Link will be able to obtain a Sol, which he must return to the entrance. There are a total of two, thus Link fights him two times.