The intro is a really nice touch that tells me this is a battle theme and this is definitely a legendary pokemon! Nice work with the percussion and bass in particular that sell battle vibe. The flutey sound of the lead instrument gives the sense of wind and air which matches the Rayquaza theme. I really like the inclusion of the battle win theme at the end (which also seems like a stylized version of the evolution complete jingle - I don’t know if I ever realized how similar they were before now). Nice work with this one, thank you for sharing!