Hidden Skill
From Zelda Wiki.org
Seven hidden skills exist in Twilight Princess. These skills are taught by the Hero's Spirit, summoned by howling stones, and are very powerful. After you've howled the newly learned song with him he will ask you to transform into your human self and find him. When you've found the golden wolf walk up to him and you'll go into a cloudy area and learn the hidden skill. After he has given you the button combination he'll tell you to perform it on him. If you fail or have difficulty performing the skill he'll instruct you with greater detail. When you've demonstrated the skill correctly he will say that the hidden skill has been passed on and how many skills are left to learn. A list of the skills, in the order they are learned, is shown below.
If an enemy is killed through the use of one of these moves, if the player puts away Links sword, Link will sheath it in the same way he would after having just defeated a boss.
