This was an idea I had a while ago.
When a namekian has a very high Power Level, his body begins to glow. When the fighter releases all this energy, his body glows red, and his Power Level sky-rockets.
However, staying like this hurts, and you can only keep it up for as long as you health bar lasts.
Also, all your actions are faster, because the power makes you really mad. Power corrupts, and Absolute Power Corrupts Absolutely.
Obviously it's called Namekian Flame.