One of the best targets seems like Heartseeker, which has a great effect when it equips for zero and effectively turns all of your creatures into Visara, the Dreadful
Plus, because it says you can play the exiled cards instead of just cast them, it means you can use it to exile lands and then play them
The 14th slot is dedicated to Breaking News, and while there are different listed rarities, we have 30 rares and 15 mythics
All cards can only be tapped once per round
First, lets not forget that each pack of Unstable comes with a full-art land
Bouncing a damaged Kronk or The Prince, Never Gives Up can be a great way to heal them so they can be played again, while bouncing a shifted Hercules or Cinderella will always give you two cards back, and even allow you to add one of them to your inkwell if you're in a position to play the Floodborn card for full price