You didn't seek to become a lich.  Perhaps you interrupted a wizard during the casting of the spell or was cursed by a powerful enemy, but here you are - a lich along with everything that goes with it 

Suggested Characteristics

d2	Ideal
1	I didn't ask for this. I'll find a cure somehow.
2	I didn't ask for this, but what's wrong with immortality at the cost of some collateral damage? One soul every so often isn't so much to ask

d2	Bond
1	My friends will help me break this curse before I fall to evil.
2	I'm immortal now. I don't really need friends. I need an army.

d1	Flaw
1	No one can be allowed to find my phylactery. So long as it is safe, I can't die.