Outside of it is obvious applications and skills (Atlantica online Gold), it is an otherwise mediocre mercenary. Even though it can ostensibly become a decent front line choice in Atlantica World, it will find itself being the first mercenary to rotate in any situation, because enemies will concentrate on it. Takes good damage from Flame Sword, but isn't fodder to it like other mercenaries seem to be.
Mana Burn damage can be good, but only when taken to a very high level, which is difficult because Exorcists already have competition from two other excellent skills which master priority. Seal Staff is almost useless. It has very little use in PvE, and apparently only at very high levels (Atlantica Gold). That is all; sincerely hope you have a good hunting in our website.