The cheap bounce can help you stabilize early, while the card draw potential gives you a way to pull ahead in longer games
Kalain is also the cornerstone of a new red-black commander deck being released with AFR , so while there will be a lot of copies on the market, shell be useful in a lot of decks
Damage is the way that most Dragon decks win, so a one-sided damage doubler should be a welcome addition to the archetype
Mirror Gallery, Mirror Box, and Sakashima of a Thousand Faces all remove the legend rule, which allows you to go to town copying legendary creatures
Its possible that Standard will not develop in a way that is favorable for Brimaz, but I suspect that this card would be playable in nearly every Standard format that has ever existed, including this one
SETS LIKE THE HOBBIT AND MARVEL CAN HAVE REPRINTS There is one way for Wizards of the Coast to give us Universes Beyond reprints, though