Echo of the Oceans

Echo of the Oceans is an ability available to Shamans in Pantheon: Rise of the Fallen.

Description
???

Mastery
1st:
 * Cost to upgrade: 1
 * Extend duration to 12s.

2nd:
 * Cost to upgrade: 4
 * Increase active Water Boon bonuses to 30%.

3rd
 * Cost to upgrade: 9
 * Increase active Water Boon bonuses to 50%.