What is considered a finished team?

Well then I'm screwed. Been playing this for over 3 years now. Haven't completed one team let alone relic 8. Iv still have to work on Vader to finish his relics. It would be impossible to get more then one too fully completed in a timely fashion. I mean I'm a f2p player. Now to fully relic a whole team unless anoth
er 4 years of trying.