Magic Bleed

The first cases of Magic Bleed were discovered somewhere in the year 1952 of the Age of Awakening. At first it was thought that isolated cases of magical surges of the sort that can occur when the weave of the world has weakened between planes, or when a spell caster loses focus for a second. It only happened to arcane casters with the kind of power that was rare to achieve and therefore it took quite some time for cases to be connected. Only when other symptoms started to appear was it looked into as anything other than an anomaly, as mages started to reach out to others with similar power level and realised that it was happening to others all across the material plane.

Causes

Although cases have been occurring for almost two decades, the cause is still unknown. Thus far divine spell casters seem to be unaffected so there seems to be a problem with mortal beings' ability to connect with the arcane and utilising power from the magic inherent in the world around them.

Symptoms

The first symptom is typically spells that require more power to cast going awry in a variety of ways. It leads to unpredictable results, some with just small mishaps and others can have a quite damaging effect. The next symptom is magic "leaking" out of the spell caster; sometimes resulting in ways that a normal spell would even though the caster didn't try to perform a spell at that moment, and sometimes simply draining the caster of some of their energy for spells that day without showing outwardly. 
In later stages the spell caster will lose access to the energy needed for spells of significant power and then slowly but surely lose the capability for magic entirely.

Type

Magical

Origin

Magical

Rarity

Extremely Rare