Palace Heist's Story Involves Stealing Back The Hexwell Crown From Jafar Sneaking Into His Stronghold And Battling His Minions Anyone who previously played the Illumineer's Quest: Deep Trouble may recall that during that adventure Ursula had control of the Hexwell Crown and used it to take over Lorcana and turn glimmers into her manipulated minion servants
For example, if you control The Ozolith ("Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.") when Sin's last ability resolves, you'll put the appropriate number of each kind of counter onto both The Ozolith and the target creature
When this card transforms, you pick an opponent
So, you should expect to see more spoilers of these lovely reprints as we get closer to the release date
Yoshitaka Amano illustrated this Double-faced Kefka, Court Mage/Kefka, Ruler of Ruin and Terra, Magical Adept/Esper Terra