you have to check the symblos behind you. they are for the fire things and the fire symbol is red fire ice for blue fire and storm is for purple fire. Hope that helped ~Jacquline Thunderblood :)
Actually I found I was stuck in some kind of glitch or something. I fought the first 2, figured out the mysteries then died in the 3rd room. I hurried and came back so I didn't have to do the first 2 again and it worked. I fought the 3rd one and afterwards, the mystery props didn't show up. I was in an empty chamber, staring at the walls and floor trying to figure out what I was missing. I left, restarted my computer, came back and had to fight them all over again anyway. :( I did end up getting it but that was frustrating! Thanks for you help anyway. :)