Way of the Four Senses

Monks who practice the way of the four senses founded a method of using ki to block out their sight entirely. This inhibition allows for the heightening of their other senses in return and grants them preternatural reactions and perceptions. Once used only as a means of reaching a heightened state of meditation, masters of this discipline have invented a fighting style that transcends natural senses.

Closed Eyes Open the Mind

At 3rd level, you gain the ability to trade your sight for an increase in your perceptual abilities. At the end of a short or long rest, you may choose to blind yourself. When doing so, this blindness lasts until your next short or long rest. While blinded in this way, you are immune to the blindness/deafness spell, gain 10ft of blindsight (the ability to perceive your surroundings without sight), and 60ft of tremorsense. In addition, you have advantage on Intelligence (Investigation) or Wisdom (Perception) checks based on hearing or touch.

Deflect Assailant

Additionally at 3rd level, you may choose to use your Deflect Missiles reaction against any melee, ranged, or magic attack that targets specifically you and requires an attack roll. When you do so, reduce the damage taken by 1d10 + your dexterity modifier + your monk level. If the attack you are deflecting is a spell, you must expend a number of ki points equal to the spell’s level or the deflection fails.

If you reduce the damage to 0, you may spend 1 ki point to redirect the caught attack at the instigator of the attack. If you do so, make an attack roll that uses your proficiency + your Dex mod against the new target.

Shield of the Mind's Eye

At 6th level, you gain the ability to react to attacks made against those around you. Your Deflect Assailant ability can be used to catch an attack targeted at a creature within 5ft of you.

Supernatural Reflexes

Additionally at 6th level, you gain the ability to reflexively counter more than one enemy attack. You may expend 1 ki point to gain an additional reaction for the duration of the round. This can only be done once per round.

Mind's Eye Enlightenment

At 11th level, you have further extended your mind’s eye capabilities. Your blindsight extends to 30ft and your tremorsense extends to 120ft. Additionally, you gain advantage on Wisdom (Insight) checks made against creatures that you can feel with your tremorsense.

Sword of the Mind's Eye

At 17th level, you gain the ability to enter a state of heightened agility and consciousness. You may expend 10 ki points as a bonus action to enter a state of incredible alertness for 1 minute

While in this state you gain the following benefits:

• You may use unlimited reactions.
• When you catch an enemy attack with the Preternatural Reflexes or Deflect Missiles abilities, you may throw it back without using a ki point.
• You can extend the effect of Shield of the Mind’s Eye to 15ft around you.