You can create a nearly inpeneratable force field around yourself or another person within 15 feet of you. The field has a radius of 10 feet. It lasts 1d4 rounds and may be summon it once/five levels. The field is not invulnerable to one or more of the following forces/objects. If the field comes in contact with the selected forces/objects then the field is null and void when confronted with this type (but not with any others).

1. Electro-magnetics
2. Mental Forces
3. Extreme Temperatures (High, Low or both)
4. Cosmic Energies
5. Vibrations (from an Earthquake or Jackhammer)
6. Lead
7. Plastic
8. any particular common Metal or Metalic Ally (i.e. Colnutite, a metal found only on a planet 100,000 parsecs from Earth won't cut it, unless, of course you RP on that planet.)

If you elect to have more then one vulnerability, the power may last: 1d4+1 rounds w/ two vulnerabilities, and 1d6 rounds w/ three vulnerabilities. It can last no more than 6 rounds. Note: If one elects to have their field be vulnerable to everything except a particular force, they may have this power in addition to any others they are entitled.

Alternative: You may have a total entropy field (Nothing can touch you) but may only summon it once/day and it lasts 1d6+1/5 levels rounds. It may be the only type you can cast, you must choose this alt. at character creation. Unlike intangablity you may attack.