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gaimanite.pkat
Since: Nov, 2013
2015-10-13 12:09:07
Well, I'm not sure if you'd read them as a teenager, but the original How To Train Your Dragon books had brightly colored covers, and there was an evil guy who definitely would have made an Iron Maiden like that, and a talking sword probably wouldn't be too much of a stretch. But that's just a wild and probably wrong guess.
timelessmulder
Since: Oct, 2014

This was a book I read when I was a teenager, and it was part of two books (may be a trilogy). The covers I had were bright green, and bright yellow.
The most distinct thing I remember about the plot was this Iron Maiden. This evil scientist/dictator guy was trying to make the most pain possible, so he replaced the spikes in the Iron Maiden with needles. He would inject his victims, and could extend their suffering. I also remember a talking sword, but I'm less sure about that.
Thanks in advance, and I'll post more if I remember more!