Rank 1 Increases the amount of damage reduced by your Stoneskin Totem and Windwall Totem by 10% and reduces the cooldown of your Grounding Totem by 1 sec.
Rank 2 Increases the amount of damage reduced by your Stoneskin Totem and Windwall Totem by 20% and reduces the cooldown of your Grounding Totem by 2 sec.