Here is the datamined class and tier set tuning for Patch 10.2 PTR Build 51521.
Class ToolsHavocTalentsVengeanceTalents
Specialization (1)
Effect #2 NEW Effect #9 Apply Aura: Charge Recovery Affected By Haste Regen:
Value: 0
NEW Effect #10 Apply Aura: Charge Recovery Affected By Haste Regen:
Value: 0
Talents (17)
Immolation Aura has 1 additional charge and 30% chance to refund a charge when used.
You can have multiple Immolation Auras active at one time.a time.