Bolt from the movie of the same name has been shown off in key art from the set and Ravensburger has also revealed that characters from Lady and the Tramp will make their debut on Archazias Island
This means that if paired with self-mill or discarding effects, Olivia can be used to cheat the likes of Eldrazi titans or a Blightsteel Colossus from your graveyard, immediately attacking an opponent
It provides potentially immediate value while continuing to produce value later
You could even go for a Cat Tribal subtheme with Marisi, since Arahbo, Roar of the World doesnt just work from the command zone
Here is my favorite Town design that didn't work out as it added yet another source of tracking complexity: Besaid, Place You Can Visit Land Town CARDNAME enters the battlefield tapped
You can immediately swing out with something like Blightsteel Colossus or Marit Lage, potentially ending a game pretty quickly