Principle: Armor Rune Word - Diablo 2
Principle Rune Word is the highest level Class specific Rune Word in the game coming in at level 55. It's also one of the worst Class specific Rune Words in the game since at this point in time there are usually better chest armors that you can get than Principle. However, Principle does make a good budget armor for Paladins who can't yet afford better Rune Words like Chains of Honor.
Keep in mind that all Rune Words you create will retain any pre-existing bonuses found on the item. If you find a 'Superior' piece of armor with +Enhanced Defense, a Superior Weapon with +Enhanced Damage or a Helm/Weapon that has +Skill bonuses for a certain class, all of these will remain on the final Rune Word that is created. It's also possible to 'ebug' a piece of Ethereal Armor that you find which will increase the Defense bonuses by 50%, check out my Ebugging Guide for more information.
Farming High Runes: Out of all locations in the game one stands above the rest for farming specifically High Runes, the Countess during Act 1. The Countess has a guaranteed chance to always drop a High Rune and can even drop more than one. Check out my The Countess Farming Guide for more information.
Required Runes: Ral -- Gul -- Eld
Level Req: 55
Other Req: N/A
Slots: Chest Armor
100% Chance To Cast Level 5 Holy Bolt On Striking
+2 To Paladin Skill Levels
+50% Damage to Undead
+100-150 to Life (varies)
15% Slower Stamina Drain
+5% To Maximum Poison Resist
Fire Resist +30%
Principle Rune Word in Ebugged Shadow Plate.