A dangerous enemy that is difficult to damage due to its high DEF and SPR.
Aside from the first turn, if you deal dark damage against it in 2 consecutive turns, it will use metamorphosis, which will greatly lower its SPR, so use your magic against it during this time. On the other hand, metamorphosis greatly increases its magic power, so be sure you weaken the enemy and use abilities to reduce the incoming damage.
Don't forget to prepare the means to counter it's silence, confusion, and stop effect attacks.