I might be wrong, but i think i had to go through all the boxes again when i've finished the Platinum Box for the first time during last Colo... (right now i'm 54 rolls away from emptying the Platinum box for the first time - and i'm going to get it all, because i'm out of SR wilds after making a new SSR/BSR deck for this Colo) and out of Pero for, and N Gacha Tickets for rolling it for the Daily Missions...
Still, i've realized lately that i've made quite a stupid move spending Ex Wildcards on Christmas cards "just to make them all be +5) since i'm not using them in Colo Decks, and they don't even have the biggest max SED on my collection. I've also got (too late, sadly) the idea that levelling any card you can get more than once to lvl 100 ASAP helps you save those Ex Wildcards on it's Ex levels since it will get an extra level over 100 every next time you'll get it (and this is really important for the event cards, including those from Colo boxes, since you won't get another free Ex lvl for them after the Coloisseum will end)

Originally Posted by Vic47

I might be wrong, but i think i had to go through all the boxes again when i've finished the Platinum Box for the first time during last Colo... (right now i'm 54 rolls away from emptying the Platinum box for the first time - and i'm going to get it all, because i'm out of SR wilds after making a new SSR/BSR deck for this Colo) and out of Pero for, and N Gacha Tickets for rolling it for the Daily Missions...
Still, i've realized lately that i've made quite a stupid move spending Ex Wildcards on Christmas cards "just to make them all be +5) since i'm not using them in Colo Decks, and they don't even have the biggest max SED on my collection. I've also got (too late, sadly) the idea that levelling any card you can get more than once to lvl 100 ASAP helps you save those Ex Wildcards on it's Ex levels since it will get an extra level over 100 every next time you'll get it (and this is really important for the event cards, including those from Colo boxes, since you won't get another free Ex lvl for them after the Coloisseum will end)

you're wrong. answers everything above in this wall of text.

Originally Posted by soranokira

you're wrong. answers everything above in this wall of text.

I just cleaned out the Platinum box. The people above are correct. I was automatically restarted on the platinum box.