All values come from the item tooltips on the mob and exchange pages, with the class taken from the "Priest Armor" line. Priest armor asks for two stats: INT as the main one and a lower STR requirement on top.

Priest sets: total defense compared

Priest Armor sets, total Defense by + level
SetItem GradeTotal DefenseChest piece requiresMax Durability (lowest +)
Fabric Coat set low Class +3: 79 · +4: 94 +3: INT 66, STR 55 4,800
Priest Plate middle Class no full set +3: INT 128, STR 86 7,600
Priest Full Plate middle Class +1: 241 +1: INT 144, STR 87 7,000
Priest Chitin middle Class +1: 344 · +3: 374 · +5: 404 +1: INT 160, STR 90 8,750
Priest Chitin Shell high Class +1: 382 · +3: 412 · +4: 427 · +5: 442 +1: INT 176, STR 94 10,937
of Trial (Pidama) high Class +1: 382 +1: INT 176, STR 94 10,937

Priest Full Plate (+1) totals 241 and Priest Chitin (+1) 344, a 103 point gap. Priest Chitin goes all the way to +5 on the site, and at 404 it gets close to Priest Chitin Shell (+3) at 412. Priest Chitin Shell is the only set across all four classes with a complete +4 version (427).

Priest Chitin Shell's +3/+4/+5 pieces are in the Chitin Shell +3/+5 guide and of Trial's per-piece table is in the Pidama set guide. The other four sets are below.

Fabric Coat set (+3, +4, +5)

Fabric Coat, Fabric Pants, Priest Cap, Priest Gloves, Priest Shoes (low Class)
PieceDefense +3Defense +4Defense +5Stat requirement (+3 → +5)
Priest Cap 15 18 21 INT 58 → 62, STR 51 → 55
Fabric Coat 24 28 32 INT 66 → 70, STR 55 → 59
Fabric Pants 20 24 28 INT 62 → 66, STR 53 → 57
Priest Gloves 10 12 14 INT 50 → 54, STR 47 → 51
Priest Shoes 10 12 — INT 54 → 56, STR 49 → 51
Set total 79 94 — —

Here STR and INT both go up by 2 per + level, and Health Bonus is 4 at +3, 6 at +4, 8 at +5. There's no Priest Shoes (+5) on the site. The +1 version only appears with the extra-defense bonus: Coat 16 (Club 5), Pants 12 (Ax 5), Cap 9 (Dagger 3), Gloves 6 (Sword 5), Shoes 6 (Spear 3).

Priest Plate (+3, +4)

Priest Plate, pieces listed on the site (middle Class)
PieceDefense +3Defense +4Stat requirement (+3 → +4)
Priest Plate Pauldron 60 — INT 128, STR 86
Priest Plate Pads — 53 INT 126, STR 86
Priest Plate Boots — 26 INT 118, STR 82

Only the Pauldron (+3), Pads (+4) and Boots (+4) of Priest Plate show up; no Helmet or Gauntlet.

Priest Full Plate (+1)

Priest Full Plate Armor set (middle Class)
PieceDefense +1Stat requirement (+1)
Priest Full Plate Armor Helmet 45 INT 136, STR 83
Priest Full Plate Armor Pauldron 76 INT 144, STR 87
Priest Full Plate Armor Pads 60 INT 140, STR 85
Priest Full Plate Armor Gauntlet 30 INT 128, STR 79
Priest Full Plate Armor Boots 30 INT 132, STR 81
Set total 241 —

The second +1 version with a weapon-type bonus exists here too (Pauldron Club 5, Pads Ax 5, Helmet Dagger 3, Gauntlet Sword 5, Boots Spear 3). The Rare Priest Full Plate Armor Helmet (+6) has 58 defense, Dagger 25, INT 146, STR 93.

Priest Chitin (+1, +3, +5)

Priest Chitin set (middle Class)
PieceDefense +1Defense +3Defense +5Stat requirement (+1 → +5)
Priest Chitin Helmet 64 70 76 INT 152 → 160, STR 86 → 94
Priest Chitin Armor Pauldron 108 116 124 INT 160 → 168, STR 90 → 98
Priest Chitin Armor Pads 86 94 102 INT 156 → 164, STR 88 → 96
Priest Chitin Gauntlets 43 47 51 INT 144 → 152, STR 82 → 90
Priest Chitin Boots 43 47 51 INT 148 → 156, STR 84 → 92
Set total 344 374 404 —

Every two + levels both INT and STR go up by 4. The +5 pauldron needs INT 168 and STR 98.

Where priest sets drop

Where each set drops
SetMob source (mob pages)Exchange box, rate shown on the site
Fabric Coat set +3/+4/+5: 70 mob records between level 1 and 47 (Worm, Bandicoot, Kecoon, Bulcan, Werewolf…); +1: Rampage Man, Scouter, Hirok, Staut (8804–8807, level 12) —
Priest Plate 8 records, level 43–100: Machirodus (654), Laird (1202), Konga (1300), Lard Orc (1673), Half Troll Curandero (9066), Flame Rock (3851) —
Priest Full Plate 23 records: Lamia (60), Dragon Tooth Soldier (62), Dragon Tooth Knight (65), Dragon Tooth Commander (69), Lamiros (70), Lamentation (80), Princess (90); the extra-defense version from 8804–8807. Helmet (+6): [Shackled Lord] Fluwiton (9512) +1: Abyss Gem 1%
Priest Chitin +3 only: 37 records, level 30–140 (Duke, Bach, Bishop, Harpy, Troll, Snake Queen, Troll King, Talos…) +1: Abyss Gem 0.25%, Random Item Exchange Gem 0.328%–0.41%, Ornament 0.169%–0.27%; +3: Fragment of Arrogance 0.035%, Fragment of Gluttony 0.036%, Fragment of Rage 0.036%, Black Gem 0.06%, Green Gem 0.06%; +5: Random Item Exchange Gem 0.082% (Helmet, Pads, Gauntlet only), Ornament 0.135%–0.169%
Priest Chitin Shell +1 only: 51 records, level 30–165 (Volcanic Rock, Ultima, Titan, Balrog, Samma, Lesath…) +1: Dark Fragment of Wrath 0.003%, Dark Fragment of Sloth 0.002%, Dark Fragment of Lust 0.038%–0.048%, Blue Gem 0.064%, Red Gem 0.064%, Yellow Gem 0.064%, Silvery Gem 0.069% (Pauldron, Pads only), Random Item Exchange Gem 0.393%–0.492%, Ornament 0.135%–0.338%; +3: Fragment of Avarice 0.031% (Pauldron, Pads only), Fragment of Jealousy 0.02%–0.03%, Fragment of Lechery 0.028%, Fragment of Sloth 0.034%–0.035% (no Helmet); +4: Random Item Exchange Gem 0.098% (Gauntlet only), Ornament 0.203%; +5: Dark Fragment of Pride 0.011%, Dark Fragment of Gluttony 0.011%, Dark Fragment of Envy 0.011%, Dark Fragment of Greed 0.011%
of Trial Pidama (9537, level 70) +1: Dark Fragment of Envy 0.001% (no Pads), Dark Fragment of Greed 0.001% (no Pads)

The exchange box percentages don't add up to 100%, so read them as relative odds. Mob pages list no drop rate and no spawn location at all; the site only shows which mob's list an item is on. Ornament = the Golden Star / Red Bow / Tinsel Ornament box.

FAQ

How much INT and STR does priest armor need?
Priest Full Plate pauldron INT 144, STR 87; Priest Chitin (+1) pauldron INT 160, STR 90; Priest Chitin Shell and of Trial (+1) pauldron INT 176, STR 94.
Priest Chitin +5 or Priest Chitin Shell +1?
Priest Chitin (+5) totals 404 and Priest Chitin Shell (+1) 382. The pauldron asks for INT 168/STR 98 and INT 176/STR 94 respectively.
Does of Trial come in +3?
The site only shows of Trial at +1. Priest Chitin Shell, on the other hand, is also listed at +3, +4 and +5.

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