Hogan

The Fenikkusugan (literally meaning "Eye of the Phoenix) is a dojutsu that Tyler was born with, but only seemed to awaken in his eyes. No one elses, not even his clan's, so it mystifies his family on how he got it. This eye has different stages it goes through. Each with different abilities, and the last stage having all those abilities put together. He can turn his eye on and off whenever he chooses.

Stages & Abilities
There were three stages that Tyler went through until he awakened the last and final stage:

The First Stage of the Fenikkusugan awoke in Tyler's eyes when he first started training with genjutsu at the age of 6. During this stage, the eye was all black with a green phoenix in the middle. This eye allowed Tyler to see through genjutsu Ranks E through B. It also allowed his genjutsu to develop rather quickly when most children would have a hard time, and it gave him the ability to use the genjutsu, Demonic Illusion: Bloody Death Sentence, so now only he knows this jutsu.

The Second Stage of the Fenikkusugan awoke in his eyes when he perfected his summoning technique of phoenixes. This eye ability allows him to summon phoenixes without blood sacrifice and hand seals. The eye on this stage was all black with a orange phoenix in the middle. It didn't seem like him being able to summon phoenixes and him having this eye was a coincidence. This also gives him the ability to teleport a short to medium distance turning into a flaming phoenix and dissipating.

The Final Stage and most powerful, awoke in his eyes when Tyler killed his best friend. It may have been awoken due to tragedy or by coincidence. The pupil is black with a flaming phoenix in the middle and flames in the place of the white part in his eye. This eye allows him to use both stages powers and lets him see how his opponents chakra is being distributed. He can also tell what kind of chakra nature his enemy has and allows him to move at twice his normal speed.