Demonic Illusion: Mirror Heaven and Earth Change

The user decrypts a genjutsu that has been applied onto them, and casts back a technique with identical effects onto the opponent. It's a form of illusion reversal, but in order to instantly read through a technique and cast it in return, the Sharingan's power is necessary. As genjutsu is initially used to confuse the enemy, this technique which sends it right back to its caster deals a high amount of mental damage, more than anything else.