I've been trying to get the E-cards, but all I have is a promotional card I found on Ebay that was given away with... something. I also need a Japanese E-reader as the US/EU/AU version doesn't use Japanese E-reader cards.
So you need:
Japanese Colosseum
Japanese E-reader
Japanese Gamecube or Freeloader/Action Replay
GBA with GC link cable
Considering Scizor is available in the main game is it really worth all that? For Celebi I can understand, but Scizor????