Power

The Power is a mysterious, unknown force that bestows potent, supernatural abilities upon those who tap into it, but at the cost of gradually siphoning off their life force with each use, coupled with an overwhelming addiction, which similarly grows stronger the more The Power is exploited by its users. Running in select bloodlines, The Power lies dormant for most of their early lives, but manifests on the thirteenth birthday of the firstborn sons (or, according to Caleb, the eldest male produced by the bloodlines) in every generation of those bloodlines. This is described by Caleb as being a test of the boy's character. Their gifts grow year-by-year until reaching their full strength and effect when the warlock ascends on their eighteenth birthday at the exact moment they were born.

Biography
The exact origins of The Power remain unclear. Not even the Book of Damnation - which contains the entire written history of the Ipswich Covenant - has no record of its beginnings. The only consistency being that those who possessed and mastered The Power were persecuted as witches and hunted down and executed for witchcraft.

Ascension
Ascension is the process in which a warlock's power fully matures. Ascension occurs on a warlock's 18th birthday, at apparently the exact moment of their birth (11:12 PM for Caleb's case, as shown in the film). It is a painful and frightening process for the warlock, as his body is overwhelmed with new power. A warlock's ascended power is described as being a thousand times stronger than their pre-ascension abilities, and therefore extremely seductive.

One of the other negatives to ascending is that when the user achieves this, The Power becomes their very life. Thus, when one uses it too much, they age prematurely each time until they burn their body through over-usage, and if one wills their power away, they will die instantly.

Powers and Abilities
The Power remains dormant within the male user until his 13th birthday, during which the user "gets a taste" of The Power. Caleb Danvers described his "taste" of The Power as a kind of test. The user is granted untold power that grows more powerful with each year until he ascends to full power on the eve of his 18th birthday.

Telekinesis/Psychokinesis
Telekinesis is the most visible of a warlock's abilities. This allows them to perform a variety of effects that defy gravity; ranging from falling from great heights without harming themselves to flying or even the levitation of various objects, such as paper. They can use this ability offensively by creating concussive blasts powerful enough to knock people a few feet away.

Increased Strength
Warlocks can use magic increase their strength to unforseen superhuman levels. This was shown in the film between Caleb and Reid during one of their confrontations.

Increased Speed
Much like one's strength, a warlock could use the Power to augment their speed and agility to undetermined and considerable levels. Enough to be registered as a speeding blur to the naked eye and fast enough to react to certain things at inhuman speeds such as gunfire.

Pyrokinesis
Warlocks can ignite and manipulate fires with The Power.

Mediumship/Clairvoyance
Warlocks can see the conjured spirits of the deceased, particularly darklings.

Warlocks can sense when one of their own is using The Power. In some cases, the sensing of one using The Power can awaken another from their slumber.

Aerokinesis
The power to control the wind.

Levitation
The power to defy gravity and hover or maneuver freely in the air or even fly. Caleb uses this power during his fight with Chase in Putnam Barn. May be an extension/aspect of telekinesis/psychokinesis.

Astral Projection
The power to project one's consciousness and senses beyond and away from the physical body. When Sarah got out of the shower to investigate the broken light bulb, that smoky being behind her could have been a case of astral projection; the inference is that it is Chase stalking her. This power may have been used by the head of the Putnam family, John Putnam, prior to said family being hunted down during the witch hunts in the 17th Century in order to visit people in their dreams, as one such victim claimed that this was the crime.

Teleportation
The power to instantaneously disappear from one place and reappear in another. This power is shown all throughout the film when characters would suddenly appear out of nowhere.

Technopathy
The Power enables its users to affect machines to random degrees; when Reid used his powers to fix Sarah's car, he got it running again, and when Caleb used his powers to escape a car crash, he made his car disassemble and reassemble after flying past a truck.

Mesmerism
The power to magically bewitch others into doing one's bidding by the way of suggestion. Through the use of this power, a Son of Ipswich could mentally extract information, subliminally implant commands, lower the inhibitions, manipulate thoughts and memories, or completely disable/enable the emotions in other individuals. It is a power that takes significant time to master and is most effective on humans and mildly-trained warlocks. Standard warlocks are able to influence a single or pair of targets with the requirement of eye contact or physical touch. Users of this ability who have undergone ascension possess an extremely powerful variation of this gift akin to total domination and mental compulsion. Enabling warlocks showing mastery to easily compel multiple people and even other warlocks en masse by using only their voice as a catalyst. With visual or physical contact only strengthening their already formidable grip over a victim's mind to be nigh-inescapable. This power requires a great measure of focus to maintain and is only successful on victims lacking the mental fortitude. Victims mesmerized multiple times greatly risk having their minds becoming broken, to lose their sanity. Mesmerized targets possessing a mental will stronger than the caster are inherently resistant to and can ultimately break this power's influence.

Glamour/Shapeshifting (Ascended)
The Power bestows the ability to "glamour" or deceive others by taking on the appearance and voice of another person. Chase Collins displayed this ability when he took Caleb Danvers' appearance and voice. As none of the other Sons of Ipswich displayed this power, this suggests that glamour is exclusive to ascended warlocks.

Atmokinesis (Ascended)
The power to influence the weather. This also includes being capable of controlling and manipulating the elements: Water, Fire, Earth, Air, and Lightning (Quintessence). Chase Collins used this power to make it rain outside of Putnam Barn before his and Caleb's big battle.

Creation/Reality Warping (Ascended)
The Power enables the members of the Sons of Ipswich to create living things. However, only Chase is shown to use this ability, using it to create spiders. It is unknown if the other Sons of Ipswich can also do this.

Portal Creation (Ascended)
When Caleb Danvers ascended and was willed his father's share of The Power, he displayed the ability to open a portal to an unknown, fiery dimension to banish Chase Collins. This may be an ability attributed to those that have ascended. However, it is unknown if Caleb is aware of this ability.

Linking (Ascended)
The power to create a chain of destiny that 'links' two or more targets together. Causing for all bound victims to physically share the same fate. It is an extremely rare and taxing ability available only to warlocks that have successfully ascended.

Doppelganger (Ascended)
Available only to ascended warlocks, this power enables a Son of Ipswich to create multiple, flawless copies of oneself able to perform or fight independantly on their behalf. Unlike illusions, these proxies are completely physical and indestinguishable on every level. Sharing all the mental thoughts and abilities of their maker, but possesses only a sizeable fraction of their overall power.

Reflection (Ascended)
The power to remotely intercept harmful incoming magical attacks and projectiles within one's line of sight and suddenly turn them back against their makers at full force. It is believed by many warlocks to be the pinnacle of defensive abilities and the 'ultimate defense'. Since this power has not been shown or displayed amongst the Sons of Ipswich, it is assumed that the power remains exclusive to ascended warlocks.

Leeching (Ascended)
The Power enables a Son of Ipswich to absorb the life force or supernatural energy from both objects and people via physical contact. Users of this power could either rejuvenate themselves at the expense of fatally draining their victim's vitality or alternatively steal their powers if their siphoning remains unbroken. Among the many powers and abilities only accessible to ascended warlocks, leeching appears to be the most rare and universally feared due to it allowing its users to essentially live forever and evolve endlessly at the expense of leeching others. Manifesting naturally in only a select few warlocks apart of the Putnam bloodline, the power was what caused the Putnam Family to be exiled from Ipswich Colony and the carriers of the ability to be hunted to near extinction during the 17th century witch hunts. It was an ability which Chase Collins highly coveted, yet himself did not possess. Since this power has not been displayed by any of the Sons of Ipswich, it also is assumed that none of them possess this ability.

Addictiveness
As each time the user makes use of The Power, either for helpful or harmful purposes, they become addicted to it, and, as a consequence of doing so, seek to use The Power much more than is necessarily. Unless one has a strict willpower against the addictiveness of their powers, they can't handle the addiction and become consumed by The Power's seductive nature. This becomes more dangerous after one ascends upon their eighteenth birthday.

Accelerated Aging/Shortened Lifespan
After one ascends, The Power becomes your life force and causes one to age prematurely each time it's used. This means that even though a man in his early-twenties or forties, consumed by the overuse of their powers, causing their bodies to burn out as a consequence, can age prematurely and look like a man close to or over a hundred years old and require medication and machines just to stay alive until they die later on.

Willing
The users of The Power can also do what is called "willing". It's the act of consciously giving up your life to gift someone else with your share of The Power which you possess - you die in the process of willing it away, however. Chase made his father "will" him his powers to him, and, with that and having ascended previously, he became the powerful warlock that he is in the movie. He even tried to make Caleb "will" him his powers through coercion and then through force, but Caleb never did. Chase was close to killing Caleb, but Caleb's father "willed" his powers to his son at the request of his wife, Evelyn. With the power he inherited from his father and having already ascended, Caleb managed to create a portal and sent Chase into it, sending him to parts unknown.

It seems that in order to "will" one's share of The Power to someone else gifted with a share, one must utter the words "I will you my power" to transfer their share. It isn’t explained if there is any other factor involved in the willing, such as who receives the share over others.