Shadow Conjuration
He can manipulate shadows. His power is most effectively used during the day, optimally at twilight, contrary to what some might believe. Shadows cannot exist without light, and they are the strongest in the twilight hours of the day when the shadows are the longest. They can be formed into a blade, armor, anything imaginable if he has enough. Even creatures made out of shadows that have free will and sentience of their own.

Mark of the Shadows.
A brand, that each of his followers bears. This allows them to manipulate shadows, just as he himself does. While shadow manipulation can be learned naturally, the mark gives someone a boost whilst using the magic. Most often, it is placed on a child when they come of age. Usually on their hand, face, or rarely they have a large one inscribed upon their back. It is not a painful process usually, since it is done using magic. It bestows enhanced agility and reflexes as well, depending on how one chooses to develop their skills. As those who develop their skills grow older and more powerful, they may have additional brandings carved into their skin.

Eyes of the Shadows, Form of Shadow
Tyzitla can focus his mind through meditating, and see what is happening anywhere that there is sufficient shadow. However, such a feat is not perfect. Visions are often hazy, speech distorted and sometimes not present at all. A form of Clairvoyance, if you will. He may also move through shadows as well, moving through a realm simply known as 'The Void" as a form of quick escape/travel.

Binding of the Soul Any mortal, god, or other creature that makes an oath before any of his altars, or invokes his name whilst speaking an oath, will be driven to complete the oath no matter what, even if later on they do not wish to do it. (obviously not every little swear or oath. I think you all get the idea though.) Even oaths made against someone's will. Until it is done, they may not run nor rest until it is. In some rare cases, they cannot die either, becoming half human shadow horrors if their body is injured enough. This binding is absolute, and can only be rescinded by Tyzitla himself. There are other methods of freeing oneself, however....

While not a very...offensively spectacular power, if he was backed into a corner one has to wonder what would happen if he swore an oath on his own name....

Everything comes to an End
A powerful curse that saps the life out of anything or one placed upon it. Certainly, it may take awhile to have any real effect, but it can go unnoticed for some time. It cannot kill anyone, however, but it can leave them comatose and unable to defend themselves. There are a few ways to heal this, however. Either he removes the curse himself, or another god does so. Or with time, the curse could simply fade. In some rare cases, it may not effect the afflicted at all.

System: Fundament of Order

The standard fare for a God of Order, as it is the ability to order things. A power to create systems and write rules. For instance, were one to possess a bag of mixed nuts, Esra would be capable of organizing them as per her own designed system (ie by the kind of nut, size, color, monetary value, etc) in the span of an instant. The ultimate OCD power, without question.

Observer: Eyes Which Surpass God

Observation of what "is", "is not", "was", "was not", "could be", and "could not be", as well as the ability to fully analyze and understand all of these. In other words, the ability to see in a sense beyond sight such that reality can be overseen properly. Its greatest limit though is that while it can view what "could be", it cannot specify what "will be" definitively in its own right. In other words, it is not true precognition in itself. 

Stagnation: Make This World Stop

Imposition of the principle of "stillness", "stagnation", or simply "not changing" upon something. If Chaos is the capacity to change, then Order in that converse sense can be used to stagnate. An example could be paralyzing an enemy or otherwise stopping their motion. While if this ability has the consent of what it is acting upon or said thing cannot give consent it is an "absolute order" that reality cannot violate, if it is used upon a godly being who attempts to resist this ability, it is likely to fail. If that condition is not met though, the power of this order is absolute and cannot be undone. If a bullet is stopped in midair, not even a god will force it to move again. Of course, in that instance one probably has another bullet.

Void Command: Root of Algis

Manipulation of vacuums. While a true vacuum does not exist in the world, this is the altering of probability fields such as "electron clouds", which are necessarily filled with virtual particles until observation (interaction with non-quantum states) sets in. In other words, it is the ability to alter the probability waves of a "vacuum" in accordance with the user's will. Probability waves are altered and functionally infinite zones of effect are made finite in order to make this ability self consistent with reality, so in that sense it can be seen as the ability to lower the per-particle scale of a personal probability wave such that a sigma cutoff of the user's choosing is imposed upon it, rather than being infinitely large as it normally is.

Numerical Phantasm: Possibility Mechanics

Control over "numbers", as numbers are a source of order a priori to reality. To put most of the uses of the ability into simpler terms, the basic idea revolves around percentages, and always making sure the dice is favorable result when it hits the ground. An example would be a bag full of marbles; half of the marbles are white, and the other black. Her ability would be always selecting the black marble if she wanted it. While it seems like a lackluster ability, in reality is very versatile and useful.

First Precept 

A specialized material created by Esra that is like a black box. It has no special ability or effect on its own, but is actually useful as a building block to Esra. As it has no ability of its own other than being a building block for greater things, nothing much can be said about it. However even if it has no special ability it's amazing as a building block and changes for the needs of what it's building seamlessly.