Final Attack

Final attack is a gameplay term in the Final Fantasy series. The term refers to a part of a monster's attack script that has it instantly execute a specific action upon being killed. In terms of game coding, the final attack can be a specific attack, or the final attack script can be used to initiate a cutscene meant to be viewed upon the monster dying.

Final Fantasy VI
In this game, when a monster revives itself using the final attack script, it is treated as if it had ever died. The reason for this is fairly simple - monsters with the final attack script to revive themselves typically are not meant to be killed. For example, the player's goal is to defeat Wrexsoul, not the Soul Savers, so killing the Soul Savers at the same time would hypothetically end the battle with Wrexsoul still "alive," but due to the final attack script they are not treated as being dead during the time they revive themselves, and so the battle continues. In the same way, the player is intended to defeat the demon form of the Chadarnook, not the lady form, so the final attack script to revive itself keeps the player from winning by killing the lady form.

There are ways around this script. Certain Instant Death attacks disable a monster's final attack script, most notably Banish and the Dance and Rage ability Snare. For most normal enemies, disabling their final attack only does that and nothing more, but against certain bosses glitches can arise. Against Wrexsoul and the Soul Savers, if the player kills a Soul Saver with Snare or Banish, their final attack to revive themselves will not execute and they will remain dead. If both Soul Savers are killed this way, and as Wrexsoul has removed itself from the battle, the battle will end as the game considers the player to have defeated the enemy party. Against Deathgaze, if the player uses the Vanish-Doom Bug in the Super NES release to kill him with X-Zone (the Super NES name for Banish), Deathgaze's final attack script to reward the player with the Bahamut Magicite will not execute and the player will never obtain it.