"Team Amazing" is the more usual style nowadays. Compare that with other teams that are involved in sports, and I think that you will find that Team Amazing fits well with them. And another point, if you write "Amazing Team", you are bound to find some comedian who asks what makes you amazing!
You could use either depending upon what you wish to emphasize. Team Amazing puts greater emphasis on the team. Amazing Team stresses the nature or quality of the team more than the team itself. The difference is a matter of placement of the adjective and the noun (Team).