Every Soul Orb stack you detonate increases your Movement Speed by 1% for 4s, up to a maximum of 15%.
Level 1
Nether Siphon
Shadow Travel
Heal for 250 every 1s while using Shadow Travel.
Level 5
Dusk-Walker
Shadow Travel
Reduce the Cooldown of Shadow Travel by 4s.
Level 5
Revenant
Armor
Increase your maximum Health by 100.
Level 2
Agony
Restore Soul
For each stack of Soul Orb detonated by Rend Soul, your next Restore Soul ignores 5% of Antihealing (excluding Healing disable effects) up to 25% (5 stacks) for up to 10s.