For those asking what powers does he have. This list has some answers.
- Superhuman Physical Characteristics: Enhanced strength, speed, endurance, and reflexes.
- Excellent Swordsmanship: Highly skilled in using a sword.
- Yoki (Nature Chakra): You already know what this is.
- Preemptive Chakra Sensing: Ability to sense chakra around him to such a high degree, it acts as pseudo-precognition.
- Technique Mimicry: Right now he has the lowest version of this, but in time he will be able to easily imitate other shinobi techniques, especially physical techniques, basically like the sharingan but with talent alone.
- Regeneration: Can heal from injuries faster than normal.
- Longevity: Extended lifespan due to enhanced abilities and his status as a Claymore.
- Awakened Power: Potential to awaken greater power if using too much Yoki (Nature Chakra)
- Shapeshifting: He will eventually be alter physical form to some extent.
- Elasticity and Body Control: He will eventually be able stretch limbs to great lengths and control body flexibility similar to some claymores.
Anyway enjoy!