Mastery token (6 and 7)

i am mastery 5 (like 60k mastery on jhin) and i got an S- in poro king, no token.

i already have 1 token, are you limited to just 1 token per champ? do you have to use other champ tokens, so its impossible to get master 6/7 on every champ without using tokens from other champs?