A while back, we introduced a new super power system for use with OGL Modern and other d20 System RPGs. It uses the feats and talent trees system rather than layering another set of mechanics or adding more classes to an already complex system.
Since I couldn't find an obscure superhero that I felt like adding to the NUELOW Games stable, I am instead adding the Invisibility Talent Tree to the d20 Supers system. (You can see the foundation of the system by clicking here.)
This is a bit off-the-cuff, so it will probably be revised before it finds its way into an actual product. If you want to offer input, it will be considered and appreciated.
NEW MINOR POWER: STEALTHY
You have an unnaturally developed ability to move stealthly.
Benefit: You gain a +4 bonus to Move Silently skill checks.
NEW TALENT TREE: INVISIBILITY
You can become hard to see or totally invisible at will. The invisibility can be activated by a thought, and remains in effect until he wills himself visible again, or loses consciousness. The characters clothes and carried objects become invisible as well.
Prerequisite: At least one Minor Power Feat.
Shadowy: By taking a standard attack action, you turn partially invisible. You gain a +2 bonus to all Hide checks. This bonus increases to +6 if you are in a dark area or it is night.
Invisible: By taking a standard attack attack action, you turn invisible. All attacks made against you suffer a -6 penalty. You can still be seen by creatures that can see invisible objects, and you can be sensed by equipment that detects body heat or movement. Likewise, if you step in a puddle, are submerged in water, stand in heavy rain, or if someone fills the air with dust or flour that clings to you, you essentially become visible
Insubstantial: As Invisible, except the character becomes vapourous and become immune to damage from all damage sources except those that compress or displace air, such as extreme heat and cold. The character suffers normal damage from such attacks.