One of the most popular body armor runewords, which is most commonly used for the exceptional and elite versions of the Light Plate; Enigma grants, among other things, +1 to Teleport no matter the class (not charges, but the actual Oskill). It provides other useful stats, but Teleport is the most valued bonus, which is very useful to many builds. Many other PvP classes also benefit greatly from Teleport (Amazon is the only class that is potentially faster on foot than with the Teleport due to her very slow casting speed).
On the minus side, Enigma is a very expensive rune word to build. It also does not offer any boost to resistances (although a Barbarian with Natural Resistance will receive a modest boost with the +2 skills), which is a problem in Hell difficulty with reduced resistances.
+2 To All Skills
+45% Faster Run/Walk
+1 To Teleport
+ (0.75 Per Character Level) +0-74 To Strength (Based On Character Level)
Increase Maximum Life 5%
Damage Reduced By 8%
+14 Life After Each Kill
15% Damage Taken Goes To Mana
+ (1 Per Character Level) +1-99% Better Chance of Getting Magic Items (Based On Character Level)