Become Shadow

When you use this spell your character becomes shadow.You can not attack, or preform other actions. You instantly fail all strength checks. However you can not be attacked, or targeted by spells. You can still move as a shadow, and any gear your character possess also becomes shadow. You regain all gear when the spell wears off.You can move on any surface and at night you are unable to be seen. 

Pros: You can flee combat and hide easily

Cons: You can't preform actions while you're a shadow

If using the spell in a higher spell slot, increase the duration by 10 minutes per spell slot level. (Example: 40 minutes for a fifth level spell slot, 20 minutes for a third level spell slot