Phantagan

Phantagan is a powerful eye technique exclusive to those of the Cipher family of Saiyans, and is known throughout the universe, as one of the most powerful, if not the most powerful, eye techniques.

Abilities
The Phantagan is an eye technique exclusive to the Cipher bloodline, and it gives the user special abilities. The user of the Phantagan, when it is activated, is given certain power add-ons by the eye.

First Stage
In this stage, the user has one tomoe, and a 50x base power add-on. In this stage there is limited abilities you can do, such as copy certain techniques, but those of greater power are not able to be copied.

Second Stage
As you can guess, in this stage, the user gains another tomoe, and a 100x power add-on. In this stage there is more abilities you can copy, and ones with greater power.

Final Stage
This is the third and final stage of the Phantagan, with this stage earning you a 200x base power increase, and a third tomoe. In this stage you can copy any ability you see, as long as they are using ki based-attacks.

Mangekyo Phantagan
Mangekyo Phantagan is a evolved version of the initial Phantagan, and has more abilities, but also more limitations. In this evolved stage, the user's eye turns to that of a certain design, each family member having a different pattern. With this eye, the user's power increases 500x of that of their original base power. In this stage you can copy down any technique, and instead of just ki, it involves copying down elemental techniques as well.

Eternal Mangekyo Phantagan
In this second stage of the Mangeyko Phantagan, the user is granted another add on to their original eye-pattern. In this stage, the user's base power increases 1,000 fold, making any user of the form a force to be reckoned with.

Users

 * Aku Cipher
 * Ian Cipher
 * Ultimate Zion (presumably}
 * Leogian (via being able to assimilate the DNA of others)