Lionheart, made from Hel, Lum, and Fal, in that order. This works in 3 socket armor of all types. Possible in v 1.08 and above.
Three medium-rare Runes, and as you'd hope, quite awesome stats on the completed item. You could think of more bonuses you'd want on armor, but you'll certainly never see a Rare with even a fraction of this; it's quite an amazing item.