This Hindrance may only be taken by a character with an Arcane Background.

The caster’s magic draws on some foul, evil, or tainted source. Whenever he rolls a Critical Failure on his arcane skill roll, he gains a new Minor Hindrance (or increases a Minor Hindrance to a Major) that reflects his degrading mind and body. A wizard might become Jealous, for example, as he realizes how difficult it is to gather his power. Or Ugly as those dark energies are reflected in his contorted features.

These Hindrances last until the spelluser’s next Advance, at which time he may remove one Minor Hindrance, or reduce a Major Hindrance to a Minor. This is in addition to his regular Advance.