Magic

Surge
Surge is a mystical form of energy accessed and harnessed by surge users in order to cast spells.

Whether or not an individual possesses surge is not influenced by bloodline or external factors, but in order to be utilized properly for spell casting and conducting arcane rituals, a user must undergo sufficient training.

The caster can exhaust their Surge, seeing as the amount they are able to channel at once is limited.

Despite the fact that Surge is an innate gift, it is vulnerable to being entirely lost or greatly diminished, due to trauma, excessive use, or other reasons still unknown.

Albeit unconfirmed, tales of ancient Aldwen rituals tell of an ability to siphon Surge from other users, and it is implied that the same can be done with a user's life force.

Warlocks
Warlocks are, unlike their Mage counterparts, Surge users who devote themselves to the Divine Xiris of Life, Death, and Chaos. They exploit their Surge's own manifested corruption in order to bind and summon children of Xiris to serve their purposes. During spell casting, Warlocks are able to hear the incoherent whispers of the Mad Divine herself, boosting their spell power, though also likely to drive them into a temporary delirium. They are altogether known to be dangerous fighters.

Due to their corrupt Surge and frenzy when spell-casting, Warlocks are often associated with Xiris' own madness and rage.

Warlocks are unable to reproduce, as a consequence of their corrupted Surge, though most willingly make this sacrifice in order to serve their Divine.

Warlocks in particular are able to acquire the learned ability of channeling their life source rather than their Surge, though this practice may be fatal should the caster be inexperienced, and is highly discouraged.

Until the events of Oathbreaker Season 2, Aldwen was one of the only kingdoms who openly supported Warlocks, utilizing their skills, abilities, and unique advantages in their famous Warlock military. A majority of the kingdoms in Aradove renounce Xiris as a Divine, and do not tolerate the worship of her doctrine. For this reason, Warlocks are often referred to as Heretics.

Heretics
Heretics are Surge users whose magic and spells are not attuned to any Divine, and are themselves "Divineless," so to speak. Their magic, similar to that of Warlocks, is fluid and natural, simply not bound to a Divine.

Surge Mirroring
Surge mirroring, in contrast to Surge siphoning, sees two users creating a joint Surge pool and guiding it towards a being, spell, magical artifact, etc.

High Priestess of Xiris
The High Priestess of Xiris is a highly skilled warrior sworn to contain Xiris' madness and corruption, thereby defending the people against her darkness. It is said that their presence alone is sufficient to scatter the Mad Divine's corrupt influence.

Each must go through strict and intense physical and mental disciplinary training in order to develop an adequate immunity to Xiris' maddening whispers, and the ability to sense her corruption manifested within living beings, such as fiends, demons, and particularly powerful Warlocks.

Champions
First Champion who is seen to use surge is Theoren. The reason behind how he has it is still unknown.