The CD of Explosion Wave (ID: 1490567) usually gets reduced for each target it hits by 1 seconds. There seems to be a cap though it only reduces CD from 15 seconds to like 13 seconds even though I hit 15 targets.
Inflicts 411.1% main hand weapon DPS Earth Damage to target. If used while in the Shield Form state, inflicts 846.8% main hand weapon DPS Earth Damage instead.
When it hits, it will restore 5 rage.
When it hits successfully, cooldown time of Charged Chop and Power of the Wood Spirit will be reduced by 2 seconds.