Sacred Reyvateil

Although these Reyvateils are only found in event battles, they really aren't very different from the IPDs found in their same location, and in fact, the IPDs are stronger due to having higher stats. Aside of it, they have the same skillset, so the same advice for fighting them applies to both enemies: the player should target them first to keep them from healing the enemies, and also try to defeat them before they unleash their Minor Song attack.