What was the best attribute for the weapon of the Immortal Slaying Qingyun Sect?

In Celestial Bane, the Qingyun Sect was a mysterious sect. The Qingyun Sword Art they inherited was even more powerful. Therefore, it was best for the Qingyun Sect's weapons to have some special effects. One of the effects was that it increased the attack power of the Green Cloud Sword Technique. The Qingyun Sect's sword technique was a unique spell attack that could cause powerful damage to the enemy. Therefore, adding the attack power of the Green Cloud Sword Technique to the weapon's attributes could allow the weapon to unleash the power of the Green Cloud Sword Technique faster and increase the weapon's attack efficiency. The other effect was the accuracy of Qingyun Sect's skills. In novels, Qingyun Sect disciples usually had a high accuracy rate of skills and could accurately release skills on the enemy. Therefore, adding the accuracy rate of Qingyun Sect's skills to the weapon's attributes could allow the weapon to better display the skill level of Qingyun Sect disciples, thus increasing the practicality of the weapon. There were also some other attributes that could be added to the Qingyun Sect's weapon, such as + Qingyun Sect's upper limit of qi and blood,+ Qingyun Sect's defense, etc. However,+ Qingyun Sword Art's attack power and + Qingyun Sect's skill hit rate were the most common options.