Ruin II, known as Ruinra in the Japanese version, is a spell in Final Fantasy XIV and a stronger version of the Ruin spell. It is available to Arcanist at level 38. Ruin II deals unaspected damage with a potency of 80 and inflicts the Blind status for 10 seconds to a single enemy, and has no casting time. The spell can only be used by Arcanists, Scholars, and Summoners.
In addition, the ability can also be used by Tristan Nightflicker during his boss fight in the "Primal Burdens" quest.
Ruinra I, Ruinra II, and Ruinra III, are different variants of the Ruinra ability that can be learned by the player in Final Fantasy Legends: Toki no Suishō. All three variants of Ruinra can only be learned from the Cait Sith summon.