Warforged enhancements (history)

Level 1

 * Healer's Friend I: Benefits from healing spells increased by 10%.
 * Construct Thinking I: +2 saving throw against will-based enchantments.
 * Warforged Durability I: +2 bonus to Repair and Balance skills.

Level 2

 * Inscribed Armor I: Reduces arcane spell failure chance by 5%.
 * Warforged Hardiness: +1 bonus on Fortitude saving throws.
 * Warforged Durability II: +3 bonus to Repair and Balance skills.

Level 3

 * Warforged Constitution I: +1 constitution score.

Level 4

 * None

Level 5

 * Construct Thinking II: +3 saving throw against will-based enchantments.
 * Warforged Durability III: +4 bonus to Repair and Balance skills
 * Damage Reduction I: Grants damage reduction 1/adamantine, or improves existing damage reduction by 1

Level 6

 * Healer's Friend II: Benefits from healing spells increased by 20%.

Level 7

 * Warforged Durability IV: +5 bonus to Repair and Balance skills.
 * Inscribed Armor II: Reduces arcance spell failure chance by 10%

Level 8

 * Warforged Constitution II: +2 constitution score

Level 9

 * Construct Thinking III: +4 saving throw against will-based enchantments.
 * Warforged Durability V: +6 bonus to Repair and Balance skills.

Level 10
Types are: 1. Energy Drain, 2. Fatigue & Nausea, 3. Poison & Disease, 4. Sleep & Paralysis
 * Healer's Friend III: Benefits from healing spells increased by 30%.
 * Improved Damage Reduction II: Grants damage reduction 2/adamantine, or improves existing damage reduction by 2
 * XXXXX Immunity: These are available only if you took the coresponding greater resistance feat to unlock them.