Marcy: Looting in UW colors is really interesting, especially because Arcade has the potential to allow you to cycle things in and out of your graveyard easily if he isn't removed
Whenever you cast a spell you don't own, put a +1/+1 counter on each Scout, Pirate, and Rogue you control
The sheet has four of them so you can print it once and cut out one for your card area, one for the wallet, one for the car and one for wherever else you might open some packs or mail
This isn't quite as wild as Yet Another Aether Vortex
You'll often see these in use at MagicCons in the Command Zone, and for good reason, they're much smaller and easier to organize than a full backpack
As far as the Mirage block is concerned, he exists purely in card names and in flavor text