Grab Thalia, Guardian of Thraben
Mischievous Mystic triggers on every turn, so if you have a lot of ways to draw cards at instant speed, you can potentially get three triggers before your turn comes back around
I would try to focus on fast mana to get her up and running quick, then try to get as many bomb 1-2-3 drops as possible so maybe replacing stuff like Hedgewitch's Mask and Gimli's Axe with the aforementioned staxier cards, also cards like Illusionist's Bracers and Rings of Brighthearth for maximum Kayla value
Battle your friends with armies of adorable critters
The card is going up in price too, and I really want to have one before it goes up more
Furthermore, it only has a retreat cost of one-energy and has also been a part of a Worlds Deck in 2012 because of Zachary Bohkari, a semifinalist in 2012's Junior Division