Oh, shut up and help me remodel the Deathgaze (The After Years) page!
Death gaze is a boss from Final Fantasy IV: The After Years. Unlike the other bosses found in the Depths of the True Moon, it is a random encounter, just as it was originally in Final Fantasy VI. After defeating it, the Dual Cast ability can be extracted from the Dark Crystal. Only Palom, Porom, or Leonora can use it.
Oddly, it is not possible to lose this battle. If Death gaze defeats the entire party, the player will be returned to the Depths, though with all five characters dead. If Phoenix Downs are not used immediately thereafter, the next battle will quickly result in a Game Over.
Death Gaze will start off by attacking the entire party with Death. He will eventually run away. His HP will remain the same unless you leave the floor.