According to the official story from Ravensburger, "A torrent of the six magical inks bursts from the Great Illuminary in a mixed-up, chaotic form to flood the Inklands below
In a multiplayer match, forcing everyone else to discard on turn two while also slipping a 1/1 body out there is nice
Blast from the Past (Green-White-Blue) Timey-Wimey (Blue-Red-White) Paradox Power (Green-Blue-Red) Masters of Evil (Blue-Black-Red) You can browse the cards in these decks with the Magic: The Gathering Doctor Who Card Image Gallery, including their showcase treatments available in Collector Boosters
Hopefully Wizards will have had enough experience to be able to handle things better now that this limited approach is becoming the new normal for Secret Lairs
Cynically, its not difficult to imagine Lorcanas creators banking on this extra attention to drive excitement for its upcoming trading card game, which is due to release the first of an apparently regular set release schedule this autumn
Utility: What does save it is that, among the big three, Brago is the most self-contained