>>33738727Of course. ACE'd mons won't be transferable only if they have illegitimate shit on them, ex Typhlosion with Sacred Fire, Mew without the event credentials (OT, ID), Celebi in general since it was never released as an event, etc.
>>33738748Basically you can use the Coin Case key item as a memory editor and write your own code (hence ACE, which stands for Arbitrary Code Execution) with a small amount of setup (a Quagsire with Return, Bellsprout Pokedex entry, and Headbutt TM). Think of it as GameShark, with the Coin Case itself being the GameShark.
watch
>>33718879