Here is the datamined class and spell tuning for Build 50199.
Class ToolsBloodTalentsFrostTalentsUnholyTalentsSpecialization (1)
Effect #6 Effect #1 Apply Aura: Modifies Damage/Healing Done Value: 2027.65% Affected Spells:(and 60 more.) Effect #2 Apply Aura: Modifies Periodic Damage/Healing Done Value: 2027.65% Affected Spells:(and 60 more.) Effect #1 Apply Aura: Modifies Damage/Healing Done Value: 2027.65% Affected Spells:(and 60 more.) Effect #2 Apply Aura: Modifies Periodic Damage/Healing Done Value: 2027.65% Affected Spells:(and 60 more.) Effect #14 Apply Aura: Mod Pet Damage %: Modifies Damage/Healing Done Value: 2027.65 Effect #16 Apply Aura: Effect Aura #531: Modifies Damage/Healing Done Value: 2027.65 Class ToolsHavocTalentsVengeanceTalentsSpecialization (3)
Slice your target for 48.5727%55.8586% of Attack power) + (76.3227%87.7711% of Attack power)] Chaos damage. Chaos Strike has a % chance to refund 20 Fury. Quickly attack for (73.4897%84.5132% of Attack power) Physical damage. Generates 20 to 30 Fury. Effect #1 Effect #2 School Damage Value: 0 (AP mod: 0.7348970.845132) Effect #8 Apply Aura: Mod Auto Attack Damage %: Modifies Damage/Healing Done Value: 1025Talents (2)
Your auto attacks deal an additional (12.9848%14.9325% of Attack power) Shadow damage and generate 7-12 Fury. Charge to your target and deal (85.5716%98.4073% of Attack power)% Fire damage. Vengeance Shear has a chance to reset the cooldown of Felblade. Generates 40 Fury. HavocSpells (2)
Slice your target for 48.5727%55.8586% of Attack power) + (76.3227%87.7711% of Attack power)] Chaos damage. Chaos Strike has a % chance to refund 20 Fury. Quickly attack for (73.4897%84.5132% of Attack power) Physical damage. Generates 20 to 30 Fury. Read more on wowhead.com