Lightbulb

is a spell that lights around the player but no one else can see the light.

Effects
Light for 30 seconds 20ft on self

Spell Ignorance 30 seconds on all NPC's

Exploit
There is a way to use this spell to kill anyone you wish without anyone caring.

First:Cast the spell to activate the Spell Ignorance effect.

Second:Kill someone with a spell (Choosing Destruction as a major skill is recommended for this).

Third:You should have noticed that nobody cared or the person didn't retaliate,this is because Spell Ignorance was still active.You can exploit this as long as you still haev Lightbulb in your spellbook.