I'm not sure, but I think I gave out two of the same upgraded daggers to two different characters. It might be a problem about drafting same item twice? I don't know how the source code works :D
Hm, that shouldn't be a factor, the game doesn't really differentiate on items when drawing cards, it's actually drawing characters in your hand. Ah well, let's be real, if I wanted to make this into a full game, I will need to rewrite all code anyway. xD