Nemesis (Yuu)

Nemesis (ネメシス, Nemeshisu) is a type of Eye Magic that grants its user the ability to reflect an opponents attack.

Description
Nemesis allows the user to return powers that are directed to him, even better than before. Going faster and turning more powerful. Nonetheless, it has many downsides such as being incapable of reflecting non-magical attacks and not being able of using this technique offensively; meaning they cannot begin any form of attack unless they are attacked first. The user is also helpless when ambushed with multiple attacks as it can only be used one at a time. There are also various spells Nemesis can't reflect such as Secret Arts unless the user has the appropriate amount of skill and finally, it has a limit of how much times it can be used. Despite all these drawbacks, it is still considered an extremely powerful magic that can do serious damage to an opponent if used properly