Shael

If you look at the list of all runes, you can find out the cube recipes to create a rune of one level higher than Shael. Here are the Shael attributes:

Rank: (r13)
Weapon: Faster Attack Rate (+20)
Armor/Helm: Faster Hit Recovery (+20)
Shields: Faster Block Rate (+20)
Ilvl/Clvl Required: 29