Magic of Light

First Rule:  Light can intimidate and scare humans but it will not directly hurt them.  In most cases it will in fact heal them.

Second Rule: Light will hurt and kill demons.

Mechanics:

Those gifted with the Light usually realize it much later then those in other schools of magic.  Many are in their mid to late twenties before recognizing the talent.  A few recognize it as early as thirteen but that is highly uncommon.

The Light is "visible" as a bright shining beam that starts behind them somewhere and disappears ahead of them.  It is non directional.  Whatever direction the user is facing that is the direction the beam appears to them.  It is only "visible as the beam when the practitioner has their eyes closed and is deeply focused.  Prayer is often used to clear the mind of thought and to bring on the focus needed to observe the beam.  While in this state questions and thoughts may receive hints as to the correct course of action to take.

When in combat many of the Silver Knights will become bathed in a shining suit of armor that helps protect them from demonic blows.  Again it does not stop blows from humans and does not help greatly against a demon wielding a weapon as it does not stop weaponry.  Their swords will also often be bathed in the light which greatly aids them in their fights against the demonic hordes.

Less common abilities include shooting balls of light at demonic foes and summoning a hammer made of the Light itself.  This hammer is unusual in that it is a real physical object and as such it will harm both human and demonic enemies.  But harm given to a human usually results in great pain to the wielder as well as the Light reacts harshly to being used in such a way.

The Light can also be used to heal wounds and cure diseases as such Silver Knights are usually treated with the utmost respect.

Amongst the rarest of Light magic is the ability to purify and create food and water.  Only a handful of Knights have had this ability.  Rolard has it to a lesser extent in that he is able to use the Light to copy and existing food stuff.  Usually a bland travelers biscuit but there have been reports of Knights in the past who could create entire banquets from nothing.

Drawbacks:

For the most part Light magic is benign and causes little suffering directly to its wielder.  But on occasion wielders will receive unwelcome visions of potential futures.  Unfortunately, in almost all cases these visions come too late to avert the fate they show.  But not always, so the Knights always pay heed when one of their number has a vision.