Just use the Evolution Glitch. Give the Scyther Metal Coat, and Deposit as a Pokemon you will trade in GTS. Ask for a Pokemon no-one will have. (i.e Mew under lv 9). Now go do a easy trade in GTS such as a Bidoof for a Starly etc. Then go back to the Scyther and take it out. Once you take it out, it should evolve into Scizor.
~M51 :)