Im well in to End game with 2 lvl 50s now. I just saw/noticed this skill for the first time today in Stone Vigil. As this is a dungeon that throws fire, lightning and ice @ you, its a good place to use it. theres also that room with (i believe) 2 aevis and 2 lightning sprites. That would be a great time to use it. But it seems (besides ifrit) this is the only good place for it