So I see a lot of hate for this job as it gets rid of buffs including reraise. Well if you look at the long run it's a great healer with white mage as back up just in case. First is it's main speciality status immunity to several things so long as a spirit is active plus as long as you have more 20% of your health you will survive any attack with one hp. It's second gives you all spirit effects so long as you have one or fewer bp. So now you have unlimited stand strong. The reraise issue is fixed after you unlock it's level 13 skills. At level 13 you learn life ringer which auto casts raise at regular intervals for the whole team. So long as you have one or fewer bp you can't die and your team will auto raise plus gain hp mp and bp. So you no longer need the reraise buff at all.

Edit: also you can pick one spirit to double-down on for extra mp bp or hp. Yes I tested you. An have two of one spirit so long as the others are granted from the second speciality.