Ok, well, I have been playing a lot of lead lately, and when I recently tried to write some metal riffs, I was completely blank. I used to play all out rhythm, and I could pretty much improvise a damn Metallica album on the spot(not sayin much, but meh), but now that my metal tastes have changed a bit to death/melodic death, I cant write any rhythms that appeal to my ears. It seems as if I can't make stuff sound good without adding stupid palm mutes, which I dont want to have. Also, I just can't think of some good chords to start with sometimes. How do you guys come up with your evil/melodic/any types of metal riffs, besides using stupid power chords, and octave chords, and riding those damn palm mutes??? Any interesting reads, lessons, or songs that might help me develop some great riffing techniques for unorthodox metal rhythm guitar???? Im just sick of hearing the same sound out of my guitar, and it is depressing as hell when you sit there for an hour, and can't even come up with one riff. Any help is appreciated, thanks.