Judgment Bolt(裁きの雷, Sabaki no Ikazuchi?, lit. Thunder of Judgment), also known as Judgement Bolt, Bolt of Judgment, Bolt of Judgement, Thunder, JudgeBlt, or Bolt Fist, is a recurring ability in the series. It is a Lightning-elemental attack and usually the signature move of Ramuh.
Ramuh's Judgement Bolt attack inflicts lightning-elemental damage to all enemies. It can be used by Dagger. Like most summons, Judgement Bolt has two versions: long version and short version, with the long version being stronger. With the support ability Boost the player can always summon the long version unless it is a counterattack as part of Dagger's Trance.
Judgement Bolt is Ramuh's ultimate attack used in both the hard and extreme difficulty versions of The Striking Tree trial. Like most Primal ultimate attacks, the player party is required to defeat additional enemies to prevent an automatic defeat. Should the party defeat the Gray Arbiters enemies, Judgement Bolt will only deal moderate damage to the entire party. However, should the player party fail to defeat all the Gray Arbiters, Judgment Bolt will instantly kill the party.
Judgement Bolt is also used by Shinryu as part of its Corrupted Aether mechanic. The attack deals high damage to the entire party and is easily survivable. Players standing in puddles left behind by Tidal Wave instead take drastically increased damage that is likely to result in instant death.
Ramuh blocks the opponent's summon, disabling him/her of summoning it. Ramuh can be summoned by two distinct ways: Automatically, which summons him immediately when the summoner breaks the opponent's Brave and shows an artwork of his Final Fantasy XI appearance, and manually, where his Final Fantasy IV artwork appears.