The way of the Lateralus are a group of cultists following the belief of separating the mind and body and ascending to something more powerful then a god. Most of the information was lost to time but there are still some small groups throughout Exandria. Though the members of this cult seem weak and frail but they are deceptively powerful, they wear porcelain masks of simple make with drawings of various designs in black, white, red and yellow and also have tattoos of eyes unrelated to the all seeing eye. 

The passage above is a poem of the lateralus  symbolizing rebirth and ascension.

Strength of mind

When you chose this subclass at 3rd you can use your wisdom modifier instead of your dexterity modifier for unarmed strikes and monk weapons 

additionally you can indefinitely increase your wisdom state during a state increase. You also have proficiency in wisdom saving throws if you don’t already 

Soul sense

At 6th level you learn to sense souls around you, you can sense any living creatures within 30 feet. Range increase to 40 at level 10, 60 at level 15 and 120 at level 20

Knowledge of the soul

Also at 6th level you learn to peer into the soul of others, you can use 2 ki points to make the target make a wisdom saving throw  vs an DC Of 10 + wisdom modifier + proficiency bonus, on a success it resists on a failure you learn there resistances, immunities and vulnerabilities.

Mental bulwark

At 11th level your mind and body are strengthened, you are immune to being charmed, frightened and exhausted due to lack of sleep 

also if an attack does 5 or less damage it does nothing, it increases to 10 at 15th level and 15 at 20th level

Hover (comment if you can find a better name)

At 17th level you gain a flying speed equal to your walking speed but cannot fly higher than  5 feet off the ground. You are also unaffected by difficult terrain 

The Ascension of Lateralus

You gain the ability to ascend to an all powerful being for a short time, as an action you can expend all your remaining ki Points and gain the following benefits: 

• you are a being shrouded in light you gain a +5 to AC
• you heal to max and gain temporary hit Points equal to four times the amount of ki Points you used 
• unarmed strikes deal radiant plus an extra 5d6 psychic damage 

When the duration is over you are incapacitated for 2 rounds and gain 4 levels of exhaustion