In Veilstone City, you have the ability to change your Deoxys form. In the east of the city there are 4 Meteorites. When you have Deoxys with you in your party, talk to them and they will change your Deoxy's Form.
- Top - Speed Deoxys
- Middle - Normal Deoxys
- Bottom Left - Attack Deoxys
- Bottom Right - Defense Deoxys
All Deoxys forms have different stats and learnsets so this could be handy if you want a particular form of Deoxys that knows a certain attack