High Thunder II

Acquired: BLM (actions)
Level: 92
Type: Spell
Casting: Instant

Recast: 2.5s (GCD)
Range: 25y
Radius: 5y

AoE Type: Targeted Circle
Targeting: Enemy
Patch: 7.0

“

Deals lightning damage with a potency of 100 to target and all enemies nearby it.
Additional Effect: Lightning damage over time
Potency: 40
Duration: 24s
Can only be cast while under the effect of Thunderhead, granted when gaining Astral Fire or Umbral Ice from an unaspected state, or changing between their influences.
Thunderhead Duration: 30s
Only one Thunder spell-induced damage over time effect per caster can be inflicted upon a single target.

— In-game description

High Thunder II is an action unlocked at level 92. It is available for Black Mage.