I wanted to make a guide that includes new gear as it seems Xellie hasn't been on in a while. Take note that this isn't an all inclusive list, though I will try to update when I find something new.
I won't go into full detail on some things as it's already explained here: https://forums.warpp...iest-guide-wip/
Because part of the guide is in smaller text, I will say this. Magnus Exorcismus only works on undead element and demon race. There is an undead race as well, so you will not be able to kill monsters such as Injustices.
Divine Cross (Price on Ragial: 3m unupgraded, for +7, 14m)
- Reduces damage received from [Demon] and [Undead] races by 15%.
Set bonus with Spiritual Ring:
- Dex +2
- Increases magic damage by 10%.
- Reduces damage received from [Demon] and [Undead] races by an additional 10%.
- Equippable by level 70+, Priest and Monk classes only
Can receive Malangdo enchants
Spiritual ring (Price on Ragial: 150k)
- Int +2
- Dex +1
Set bonus with Clip  or Rosary or Rosary :
- SP Regen +9%
- Increases the damage inflicted with [Magnus Exorcismus] by 30%
- Increases the damage inflicted with [Heal] and [Sanctuary] by 50%
This has other set bonuses but these are the ones we are worried about.
Rosary , Rosary, Clip 
Yes, these are still the best accessories for you.
Rosary (Purchasable from an NPC in Prontera Church for 15k, can be less with discount skill or haggle maxed)
- Mdef +5
- Luk +2
- Equippable by level 20+
Rosary  (Price on Ragial: 130k)
- Mdef +3
- Luk +1
- Equippable by level 90+
Clip  (Price on Ragial: 600k)
- Max SP +10
Shrine Maiden Hat  (Price on Ragial: 34m unupgraded, 410m +9)
- Increases the damage of [Magnus Exorcismus] by 30%
- Increases the damage of [Magnus Exorcismus] by an additional 5% for every 2 refines on the headgear
- When upgraded to +7 or higher, adds a 5% chance of casting [Heal] at the level learned when taking damage
- When upgraded to +9 or higher, reduces fixed cast time by 1%
- Equippable by level 100+, ArchBishop only
Upgrade to +9 asap.
These next items aren't as good anymore but will help if you can't get the above items, or are too low to equip them.
I will add on to the leveling tactics/areas Xellie used. This is how I leveled my ArchBishop, starting from the beginning. (I don't remember exact levels I did, as this was back in 2010/2011, this is to the best of my memory)
Level 1-15 - Payon Cave 1
Just heal bomb the Zombies and Skeletons. Watch out for familiars as at that low level they will kill you.
Level 15-30 - Ant Hell
Take the strongest mace you can equip and just kill the eggs. There are a lot of alchemist classes there leveling their homunculi so it might be hard to find a spot, but the kills are quick enough the ant eggs spawn quickly enough most of the time. Watch out for familiars, though, at these levels they won't kill you as long as you invested a bit in Vit, but they will still hurt and are still somewhat hard to kill. Once you reach level 20 or so you can start killing the ants as well if you want, I didn't.
Level 30-35 - Orc Village
Yes, I leveled here. It's very mobby and can get expensive, especially as you need a Marine Sphere card for the use of Magnum Break level 3 (I personally put it in a belt since they're cheap, and you can buy them from most armor npcs). You need quite a bit of HP, and if you are mobbing like I did tons of potions, and possibly some HP Increase potions as well. I wouldn't recommend it for the faint of heart of those that don't have too much money. If there happens to be an experience event going on at the time, you can stay in ant hell until level 50 or so.
Level 35-75 - Orc Dungeon
This one is a bit harder now as there are so many geneticists leveling their homunculi here that it can be hard to find mobs, but if you manage to find it almost empty, it's basically the same as the orc village. Once you have sanctuary a high enough level you can do orc dungeon rather easily for faster leveling. There are Familiars and Drainlairs here, but those shouldn't pose much of a problem to you by this point.
Level 35-44 Alternate - Payon dungeon 2
This one is slower, but safer (could be faster depending on geneticists). Heal bomb the skeletons. There are Drainlairs here, but you should be able to take them out in a couple of hits. Make sure to take a mace to swap out if you're not doing enough damage with your main weapon. Eggyra are also here but they are passive. Don't try to kill these unless you have a high atk weapon, they are formless and won't take damage from heal.
Level 44-65 - Payon dungeon 3
First thing to note, there is a ninetails that spawns here, though 1 at a time. If you see it, teleport away immediately. They hit fast and hard, and will most likely kill you. There is also a spot where a @!#$ton of hydras spawn at, so try to stay away from that area, if you see any hydras, teleport away as they may be able to kill you. At this point you should be close to 2nd class, if not already. As a Priest/High Priest, I would recommend using Sanctuary until you get Magnus Exorcismus. They both cost a blue gem, and the area is relatively mobby. (I didn't do much leveling here except for partying with a friend once, not sure if I even got a level)
Level 65-85 - Glast Heim St. Abbey
Heal bomb Evil Druids and Wraiths. This is a ginormous map, so it's hard to gather a mob, but if you can, use magnus to take them out. You shouldn't need potions here since there aren't many mobs. There are mimics here so watch out for them. They don't hurt much but they hit fast, and are hard to hit. Just teleport away. There is a Wraith Dead that spawns here as well, but I've only ever seen it once so you probably don't have to worry about it, it's supposedly level 121 but I was around level 70 at the time and he fell in one wave of magnus.
Level 85-99 - Glast Heim Churchyard
You will probably need to use magnus a lot here, it's a smaller map so there are more mobs. Heal bomb monsters when you only have 1-3 on you. If you can get a Bathory carded armor that will help here. Watch out for the hunter flies and mimics. They don't hurt much by this point but are difficult to kill solo. Just teleport away. Another note, the Dark Lord MVP spawns here so you will want to watch out for him, as well as a Dark Illusion that spawns I believe once every hour. You probably won't be able to kill him either. (As a side note, as a level 9x Priest I was able to solo the Dark Lord. Did it several times again as a High Priest. Do not try this at home) I try to keep the Dark Lord dead so others don't have to worry about him (pm Princess Destiny, Destiny Talim, or Alchemic Destiny if you are leveling here and see it, I tend to be on one of these characters when game is not in maintenence, but I can't be on 24/7, even if I'm logged in. If I am on and not in the endless tower, I will try to make it there to kill him. All those names have spaces)
Level 99-105 - Niffleheim 1
You can go here earlier but Glast Heim is a bit safer as it is less mobby (or bigger, not sure which). Just use Magnus Exorcismus on the mobs, they are all undead or demon here (even the trees)
Level 105 - - Nameless Island
I am still leveling here but I will update this when it stops being enough experience to matter. I am currently level 147 and still going here. With the equipment I have I one shot everything but the MVPs, Necromancers, and Banshees (only about 2k damage away from one shotting Banshees).
Or you could just do the boring turn ins once you hit level 70.
These next items aren't 100% necessary but you're not going to run around naked are you?
For the Gray items, those may help with soloing the Fallen Bishop MVP. I don't want to try it until I'm a bit higher in level, but can anyone try it out and see if it works? I know it's possible, I just don't know what combo of gear to use (without High Wizard card). For the prices I listed next to the items, those will probably end up changing, but that's the latest I saw. Also not all of these items were selling at the moment I looked at it so I put the most recent relevant price.
Edited by DestinyTalim, 30 June 2016 - 05:54 PM.