Increases the amount of charges for your Earth Shield by X, and increases the healing done by your Earth Shield by Y%.
Improved Earth Shield is a Shamantalent in the Restoration tree. It increases the number of charges of and healing done by Earth Shield. The talent is on the same tier as Earth Shield, and requires Earth Shield to take.
Improved Earth Shield increases the number of charges of Earth Shield without increasing the mana cost or reducing the healing done per charge, thus greatly increasing the mana efficiency of the spell. The bonus to healing done stacks with the bonus from Improved Shields. At two points, the total healing done per cast of Earth Shield is increased by roughly 50%.