Ki blades are powerful weapons that can be used to defeat enemies quickly and easily in Dragon Soul. They are created by combining a ki crystal with a sword, and can be used by any class. Ki blades are especially effective against enemies that are weak to ki attacks, such as demons and undead.
There are two ways to obtain a ki blade in Dragon Soul. The first is to find a ki crystal and a sword, and then combine them at a forge. The second is to purchase a ki blade from a weapon vendor. Ki crystals can be found in dungeons and as loot from enemies, while swords can be found in shops or as loot from enemies. Ki blades can be purchased from weapon vendors in major cities.