Full Support Priests are one of the most wildly varied classes in both Stat and Skill builds. Here I will go through a few classic FS builds. Each build will have its own strengths and weaknesses.

Full Tank/Buff Support
Skill Build

Stats at 99

  • 99 Base (+5 job) Int
  • 95 Base (+5 job) Vit
  • 23 Base (+7 job) Luk

This gives you:

  • The ability to hit 120 int easily to reach high regen bonuses.
  • 100 total Vit for immunity to many statuses and strong vit def with Angelus
  • 30 luk for a boost in healing and added perfect dodge.

MVP/Large Party Support
Skill Build

Stats at 99

  • The ability to hit 120 int easily to reach high regen bonuses.
  • 100 total Vit for immunity to many statuses
  • 30 luk for a boost in healing and added perfect dodge.

This gives you:

  • 99 Base (+5 job) Int
  • 95 Base (+5 job) Vit
  • 23 Base (+4 job) Dex

OR

  • 89 Base (+5 job) Int
  • 95 Base (+5 job) Vit
  • 35 Base (+4 job) Dex
  • 23 Base (+7 job) Luk

Differences between the builds:

  • Taking lower int means less regen, but this build is less designed for heal spamming and more for supporting with skills like Safety Wall and Sanctuary.
  • Added dex in the lower int build allows for faster Sanct and SW casting. A fast spell can be life or death at a difficult MVP.

Building up through the levels:

Aco Skills:
As an aco, your skill build will vary based on who you are leveling with. If you find yourself soloing and heal bombing, you will need heal 10 right away. Heal bombing is honestly quite useless so I do not recommend doing this.

For supporting a group as a lowbie, you likely will not need Heal to be maxed. I personally recommend going Heal 3 to unlock Increase Agility early on for party moving speed. You should only need level 3-4 of this early on since it’s mainly a speed boost.
Next, work your way through Divine Protection (to level 5) into Blessing and max Blessing. If you find at this point your Heal has fallen behind, raise it a few points until you are comfortable with it.
Begin working on the Pnuema tree. Ruwach > Teleport 2 > Warp Portal 4 > Pneuma This is helpful leveling in areas witch ranged attackers like Archer Skeletons in Clock Tower if you find yourself with a mage.
Finish out Increase Agi.
At this point your major buffs should be done, but you will want to go to job 50 for the additional points for other skills, easier job change, and the Old Purple Box reward in the achievements for being j50. The order the last skill points isn’t important. The remainders are determined by which build you are following.

FS Tank Stats:

Quick breakdown of how to work up the stats:
50 int
20 vit
70 int
30 vit
90 int
40 vit
99 int
60 vit
23 luk
95 vit

Start off early levels with getting 50 int early on. This should give you enough regen to keep Agi up on yourself and a couple party members as well as tossing a few heals. You’ll probably still need to sit now and again though. From there you’re going to be weaving in your vit every so often. As you level having the increased HP and resists to stuns becomes more important.
Once your int is maxed, you’ll be taking your vit to around 60 then putting in the luk. The luk at this point will give your heal a little more boost and 3 perfect dodge, 6 pdodge if you have Gloria up.
Finally, finishing up your vit as you level to 99.

MVP/Party Support Stats:

Quick breakdown of how to work up the stats:
50 int
20 vit
70 int
30 vit
90 int
40 vit
99 int
60 vit
23 dex
95 vit

OR

50 int
20 vit
70 int
30 vit
89 int
60 vit
23 luk
75 vit
35 dex
95 vit

Start off early levels the same as the FS tank priest. Once you’re in your high 70s or low 80s the differences begin to show with the lower int build where you will get your luk and dex. In the second build, the luk helps offset the lower int a little in a bit more matk but these points can also be changed into more dex or int to vary the build as you would like.

Gear Recommendations:

If you’re just starting out, I recommend getting basic NPC gears until you can afford slotted gear. The basic defense can go a long way early on. You’ll also be wanting an NPC Arc Wand [1] since this is the best mAtk weapon you can get until you get a Bone Wand or Healing Staff.

Once you begin working on slotted gear and cards, you’ll be looking for:

Head:
Card: Elder Willow

  • Circlet[1] (Cheapest)
  • Biretta[1] (More Def)

Armor:
Card: Pupa to begin with, work to get elements such as Sword Fish, Pasana, Bathory, and Dokebi

  • Saint’s Robe [1] (Cheapest, good def, priest/merch only, limits using on other chars)
  • Coat [1] (Available to all classes, moderate high weight decently priced)
  • Formal Suit [1] (All classes, good def, light weight, expensive to buy)

Shield:
Card: The card you buy first will vary based on where you level. Thara Frog is a good choice since you will probably find yourself in High Orcs a lot. Cards for other races can vary wildly in price. Orc Warrior is often very cheap though and may help in some leveling spots.

  • Buckler[1] (Best def, can be used by most other classes)
  • Guard [1] (Universal to all classes, cheaper. Good option if you want to make a mage alt)

Weapon:

  • Arc Wand [1] (70 mAtk, +3int, Discount from NPC)
  • Arc Wand [2] (70 mAtk, +3int, Not too expensive since people farm bathories, look for 2x fabre cards)
  • Healing Staff (105 mAtk, +0int,Semi expensive. Good for healing since the heal calculation is so terrible)
  • Bone Wand (110 mAtk, +4int, Expensive, good for hitting higher regen bonuses)

Garment:
Card: Raydric will be your endgame card.

  • Muffler[1]

Shoes:
Card: Sohee is a cheap starter card and helpful for regen. Later you may want to upgrade to a Matyr for HP or a Verit for HP/SP.

  • Shoes [1]

Accessories:
Advice for this can vary wildly from person to person. These are just a few common options.

  • Clip[1] x 2 Yoyo Carded (Increase pdodge is helpful for mobbing)
  • Earring [0] x2
  • Acolyte Figure x2 (+1int and 50SP per figure)