Charged Opal and Earthbane Amulet are exactly the same except the name lv 10 common arcane item 2 Hot Spot 1 Acid Blast 1 clear talent.
There's been some mentioned in an earlier thread, let's see if I can find it... Ha, here: http://www.cardhunter.com/forum/threads/horn-of-smoke-ring-of-smoke-same-cards.1110/
If you'd like to report these, please do so in the bugs forum. We appreciate all bug reports, but we do have a way of scanning for these items which we'll do soonish.
