Blade Barrier

+5% Chance to Block Attack Damage while Dual Wielding
Attack Skills deal 25% increased Damage while Dual Wielding
50% increased Block Recovery [1]

Blade Barrier is a notable passive skill that grants additional chance to block attack damage and increased weapon damage while dual wielding. It also grants increased block recovery.

Anointment

Blight anointment to unlock the passive:

Oil #1	Oil #2	Oil #3	Outcome
Clear Oil	Violet Oil	Opalescent Oil	Blade Barrier	+5% Chance to Block Attack Damage while Dual Wielding Attack Skills deal 25% increased Damage while Dual Wielding 50% increased Block Recovery

Version	Changes
3.16.0	[Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.] Attack Skills deal 24% increased Damage while Dual Wielding changed to 25%
3.9.0	The Ambidexterity/Blade Barrier cluster has moved east several passives.
1.3.0	Chance to block reduced from 5% to 3% and damage increased from 12% to 18%. The Templar, Marauder, and Duelist starting areas have been reworked significantly. Large elemental, staff, mace, axe, sword, two-handed weapon, weapon and shield, and dual wielding wheels of passive skills have been placed on the exterior of the tree, out from the Templar, Marauder and Duelist.
1.2.0	Blade Barrier also grants block recovery and physical weapon damage. The area surrounding the Witch, Shadow and Ranger has been redesigned. Many values have been adjusted.