Diamond Weapon (Final Fantasy VII boss)

Diamond Weapon is a boss in Final Fantasy VII. It is one of the Planet's many Weapons, released by Sephiroth. The party fights it as it approaches Midgar towards the end of the game. Its attacks include a foot stomp, a blast of magical energy, and its Diamond Flash, a Gravity-based attack with a three-turn countdown that also inflicts Silence. Once the party reduces Diamond Weapon's HP to zero, it is still approaching Midgar. Once within range, it opens fire on the Shinra Headquarters. At that same time Shinra fires the Sister Ray, which successfully pierces Diamond Weapon and destroys the barrier Sephiroth erected over the North Crater.

Defeating Diamond Weapon in the PC version re-release of Final Fantasy VII unlocks the Diamond Weapon achievement.

Strategy
Diamond Weapon's laser ray deals 700+ damage to one target and foot stomp deals 1000+ damage. When the Weapon's HP is low it will use the Countdown. Unless killed in three rounds it will use the Diamond Flash attack to deal 1500-3500 damage to all party members, and casts Silence.

Since Diamond Weapon is immune to physical attacks, only magic and summons work. Good spells to use are Bolt 3, Tornado, Break and Ultima. After being hit by two or three Limit Breaks, the Weapon may open up its armor allowing the party to use physical attacks. It then starts a countdown from 3, during which it is immune to magical attacks.

At the end of the countdown, the immunity is reverted to physical, and Diamond Weapon casts Diamond Flash, dealing massive Gravitational damage to the party, and inflicting Silence. This can be annoying, as the player needs magic to continue attacking. Thus, it is advised to not use Limit Breaks; or, alternatively, bring immunity to Silence.

The party can steal Rising Sun for Yuffie; this is the only way to get it.

AI Script
AI: Main {
 * If (Count == 0) Then
 * Choose Random Opponent
 * Use  on Target
 * If (2/3 Chance) Then
 * Count = 1
 * }
 * } Else If (Count == 1) Then {
 * Choose Random Opponent with highest HP
 * Use  on Target
 * If (3/4 Chance) Then
 * Count = 0
 * }
 * } Else If (Count == 2) Then {
 * Print Message [Countdown]
 * Choose Self
 * Use <> on Target
 * Diamond Weapon's IdleAnim = Countdown Stance
 * Diamond Weapon's HurtAnim = Flinch (Countdown Stance)
 * Stage = 1
 * Choose Random Opponent
 * Use  on Target
 * Count = Count + 1
 * Print Message [3]
 * } Else If (Count == 3) Then {
 * Choose Random Opponent
 * Use  on Target
 * Count = Count + 1
 * Print Message [2]
 * } Else If (Count == 4) Then {
 * Choose Random Opponent
 * Use  on Target
 * Count = Count + 1
 * Print Message [1]
 * } Else {
 * Print Message [0]
 * Choose All Opponents
 * Use Diamond Flash on Target
 * Choose Self
 * Use <> on Target
 * Count = 0
 * Stage = 0
 * TempVar:L/SLimit = 0
 * Diamond Weapon's IdleAnim = Normal Stance
 * Diamond Weapon's HurtAnim = Flinch (Normal Stance)
 * }
 * Diamond Weapon's IdleAnim = Normal Stance
 * Diamond Weapon's HurtAnim = Flinch (Normal Stance)
 * }

} AI: Counter - Death {
 * If (Stage != 0)
 * Diamond Weapon's IdleAnim = Normal Stance
 * Choose Self
 * Use <> on Target
 * }
 * Diamond Weapon's IdleAnim = 20 (???)
 * Choose Self
 * Use <(Report)> on Target
 * RunCmd 0x22/0x0F
 * RunCmd 0x22/0x0F

} AI: Counter - PreTurn {
 * TempVar:FlashLimit = 1
 * If (Diamond Weapon's HP <= 50% of Diamond Weapon's Max HP) Then
 * TempVar:FlashLimit = 2
 * }
 * Diamond Weapon's Physical Immunity = On
 * If ((Command is Summon or W-Summon or Limit) OR (Stage == 1)) Then
 * Diamond Weapon's Physical Immunity = Off
 * TempVar:L/SCount = TempVar:L/SCount + 1
 * If ((TempVar:L/SCount > TempVar:FlashLimit) & (Stage == 0)) Then
 * Count = 2
 * }
 * }
 * Count = 2
 * }
 * }

}

Final Fantasy Brigade
Diamond Weapon appears in Final Fantasy Brigade.

Trivia

 * Diamond Weapon was not a battle in the game's original Japanese version and only appeared in the FMVs. Yuffie's weapon Rising Sun existed in the game data, but there was no way to obtain it.
 * Interestingly, upon closer inspection of the FMV where Diamond Weapon is blasted, it appears to be heading away from Midgar before launching an attack on it.
 * In the scenes where Diamond Weapon attacks Midgar it is shown to be dusk, but when the energy blasts destroy Shinra Headquarters, it is shown to be night-time.
 * There is a glitch in the game that lets the player avoid fighting Diamond Weapon, but it will ruin the player's save file. If the player enters the menu and saves their game exactly when the battle against Diamond Weapon is going to start, and then loads their game normally, the Diamond Weapon has vanished. This leads the player unable to finish the game as the barrier over the crater is still intact, and the scene where the party is prompted to parachute to Midgar never triggers.

Related Enemies

 * Emerald Weapon
 * Ruby Weapon
 * Ultimate Weapon