My character is currently level 76 in Atlantica Online and I'm in the middle of rebuilding my formation. When I turned 70 and became eligible to use the Prophet mercenary, I elected to change my build from a melee-heavy formation to a more flexible one by replacing my 2 Swordsmen and 2 Spearmen for some range/DOT/AOE options with a Witch, Archer, Artilleryman, and the Prophet. At first, this move doesn't make much sense as much of the Prophet's value is being able to buff and heal melee units with their passive Concentrate skill. But I'm counting on this skill to bolster my weaker tanks on the front line.
Joining the Beast Tamer up front to take the place of the Swordsmen are my Exorcist and my Axe main. It remains to be seen if my main will continue to be up front as he's still a bit squishy at this level without any accessories like an armored mount to increase his survivability. I can't wait to level these new mercs up to take them into Free League. My FL ranking took a dive from 10 to 11 as I've been concentrating on PVE to catch these guys up to speed. Depending on how this formation works out for me, I might swap a Swordsman back in to replace either the Archer or, more likely, the Prophet.