You'll need to transfer it to the Transfer Lab or trade for it.
you can not catch scyther in Pokemon ruby,emerald or sapphire . you have to trade them from Pokemon fire red or leaf green.
You can't get scyther in leafgreen only firered can.
You can catch Scythed on route 229.
Scyther is a Pokemon from the original game. In Pokemon X, you catch one on Route 21 but they are very rare.
No only in firered.
national park
You'll have to transfer it into Pokemon Black or trade for it.
Catch a Scyther. Then get a Metal Coat. Attach that to Scyther and then trade.
no only in leafgreen or firered
No only firered can.
outbreak
to catch scyther you have to go on the right side when you enter the safrai zone i hope my anwer helped you