From Final Fantasy XIV A Realm Reborn Wiki
Rockbreaker is an action unlocked by questing at level 30. It's available for Monk.“
Delivers an attack with a potency of 120 to all nearby enemies.
- Can only be executed when in coeurl form.
- Additional Effect: Changes form to opo-opo
- Duration: 15s
- Additional Effect: Grants Greased Lightning
- Duration: 16s
- Greased Lightning Bonus: Increases damage dealt by 10% and reduces weaponskill cast time and recast time, spell cast time and recast time, and auto-attack delay by 5%
— In-game description