In the late game stages of a match in Commander or another game format, it allows you to summon a creature of your choosing, provided you know the cost of said card
You earn them by completing the battles in the Cresselia ex Drop Event. One battle requires one token of Event Stamina , which recharges passively over time or can be replenished with Event Hourglass
For collectors, nothing beats sharing their hobby with someone who genuinely notices
But that bad first impression got it lumped in with a string of other early mechanical missteps, and it took the unique demands of Commander players and the design pressures from years of ETB power creep for phasing to finally get the second chance it deserved
They wont fade overtime, and it takes a lot to rip the corners should you take your collection everywhere you go
Take Your Game to New Levels with the Pokmon TCG: Diamond & Pearl Collector's Tins