Legal sets: A/B/U, Arabian Nights, Antiquities, Legends, The Dark, Fallen Empires, Homelands, Ice Age, Alliances + the promotional cards
Each of the precons is said to have multiple doctors companions, allowing you to customize how the deck plays and make every game feel like an episode of the show
Rot Hulk, Velukan Dragon, and Nalathni Dragon are present too but their card images are being a little shy
In deciding which cards to put on the bottom and which ones to keep, my main strategy thus far has been to assemble an "ink curve"
Since you control your triggers you can have Eriette's lifegain trigger happen first
At the same time, a mono-blue color identity is very restrictive