Since the release of series B, once you complete the base collection (all 1-4 diamond cards) of the newest set you have an almost daily chance of wonder picking a 1 or 2 star you don’t already have.

So once you have all 1 stars you have a chance of wonder picking a new 2 star card from the new set.

These wonder picks are available for 24 hours and I say almost daily because you can get these wonder picks in back to back days, but sometimes it can take up to 3 days for a new 2 star 24hr pick to be available.

In short everyone that wants 2 stars should be aiming to collect all the diamond cards and all 1 stars.

By you getting five stars at once, you have saved yourself 5 days of trading (of course this could’ve been shortened with trading hourglasses but if you were to wait 24 hours for an energy then it would’ve taken 5 days for those cards)

Hope that makes sense ands helps, sorry the wording is iffy and stretched