Excellion/Abilities

Creation
Excellion can use the power of creation, in fact, he is the origin of it. He can create anything that he knows about, it usually takes less than a second for him to create anything.

Excellion bestowed the power of creation to the Gods of Creation.

"The power of kings"
Excellion has been seen using Noctis's "Power of Kings", it is not known how he obtained or how he became able to use it, he seems to have more experience and technique with it than Noctis himself.

Shapeshifting
He can use the highest degree of shapeshifting, he seems capable of morphing into just about anything, including non-sentient objects and even particles.

Hyper-memory
Excellion permanently and vividly remembers, relives, recalls every single event and thought he's witnessed, causing him unimaginable mental pain and making him able to analyze everything to extraneous detail. This ability does not, however, speak for Excellion's own impossibly high mental capabilities to perform the level of analysis demonstrated in the compendium of the world's history, the Book of Genesis, while constantly in increasing pain. It also does not provide memories of events he has not directly witnessed. This leads to the deduction that Excellion's analysis is complete enough to be able to discern alternate world creation mechanisms and emotional behaviour ahead of time.

Twilight Trigger
The name that was given to the "mode" or "form" Excellion entered during a confrontation with Original Tael. It was also forcibly triggered briefly at beyond the usual max power to erase Monsoon/Tael Lichtflügel.

Massive black wings that appear to be made of a viscous ethereal liquid surge from Excellion's back.

As far as we've seen, this form boosts Excellion's physical characteristics to the highest seen yet and enables abnormally strong shapeshifting techniques and physical world manipulation abilities.

Drive
Excellion can alter his personal Rapture's characteristic properties to fit someone else's he's observed. The outcome of this action is self-origin manipulation, the highest form of self-existence alteration. Effectively, this means that Excellion can add and remove the identities of other people to his own, gaining their abilities and characteristics. It is also possible for Excellion to perform multiple drives and selective drives, uniting only certain characteristics of several from several people but not all from all of them unless they also share a collective identity.

So far, Excellion has been shown using this power to gain Roxas and Black's abilities and utilize several septimal powers like the azure striker and psychokinesis septimas. He also used an unknown light reflection ability. Considering how long Excellion has been influencing the world's history for, it is expected that he can obtain a limitless amount of different abilities by repeatedly driving due to how many people he's connected with throughout his life.