Path of the Inner Eye

When you choose this path at 3rd level, you can't be surprised unless you are incapacitated, and attacks against you before your first turn have disadvantage. If you take damage before your first turn, you can enter a rage as a reaction, gaining resistance to bludgeoning, piercing, and slashing damage from the triggering attack.
When you reach 8th level in this class, you get 1 extra reaction on each of your turns. This extra reaction can be used only for features granted by the Path of the Inner Eye, such as Insightful Dodge or Preemptive Parry. When you reach 18th level in this class, this increases to 2 extra reactions on each of your turns.

Beginning at 6th level, when you are hit by an attack while raging, you can use your reaction to move 5 feet. If this movement takes you beyond the range of the attack, the attack misses instead. You can use this feature a number of times equal to your proficiency bonus. You regain all expended uses when you finish a long rest.

Starting at 10th level, when you hit a creature with a weapon attack while raging, up to two creatures of your choice who can see and hear you can each use a reaction to immediately move up to half its speed toward the creature you hit and make a single melee or ranged weapon attack against that creature. This movement doesn't provoke opportunity attacks. Once you use this feature, you can't use it again until you finish a short or long rest.

At 14th level, if you are raging and a creature you can see within your reach hits another creature with a weapon attack, you can use your reaction to force the attacker to reroll the attack and use the lower of the two rolls. If the result is still a hit, reduce the damage dealt by your weapon damage die + your Strength modifier.