Way of the Ancient Oak

Bamboo's Retort

When you reach 3rd level you can use a bonus action to root your body to the ground until the start of your next turn, allowing you to absorb the force of blows and use it against a creature to great effect. If a creature damaged you with a melee attack while you were in your stance, you can make 2 unarmed strikes at that creature (no action required) immediately at the start of your turn.   You are considered to be in this stance whenever you take the Dodge action.

Ancient Oak's Acumen

Also at 3rd level, your meditations in the forest have taught you to recognize the flow of ki through all creatures, regardless of origin. You can direct your attacks towards an enemy's ki points which are imperceptible to other beings and most other monks: You can use Wisdom instead of Dexterity for the Attack and Damage Rolls of your unarmed strikes which do psychic damage.

Tranquil as a Forest

at 6th level, whenever a creature fails their save against your stunning strike feature, you can spend one ki point to have that creature also be subject to the effects of the Sleep spell.

The Undergrowth's Curriculum

At 11th level you gain the following benefits:
Teachings of the Tick: Your body weight drops to 1/4 its normal value, and if you end your turn on a vertical surface, you don't fall as long as that surface can support your weight.   Grasshopper's Guidance: You can make a standing long jump or high jump up to 10 feet away.   Ladybug's Lesson: As an action, spend 1 ki point to cast the spell plant growth without material components. When you choose the immediate benefit, you can also create light foliage easily capable of supporting 1/4 your normal weight up to 60 feet high. When you choose the long-term benefit, you can magically rid the area of disease, infestation, or corruption.

Gift of the Forest

At level 17, when you fall in battle your kindness to the forest is returned through their gift to you. As a reaction to being reduced to 0 hit points you can let go your earthly tethers and free your soul from your body. If your body still exists, its crumbles into dust.   A body materializes up to 30 feet away from where you fell, and your soul returns to it, reviving you at 20 hitpoints. You can choose to delay your return for up to one minute. You must complete a short rest before you regain use of this feature.