After weeks of playtesting, the team deemed the mechanic undoable
I actually made a video on the topic, which you can check out, but here are my rankings
Tablet of Discovery is particularly effective in this list because its two red mana can be used to immediately cast Combustion Technique or Abandon Attachments
8 Shere Khan: Menacing Predator 212/204, Ruby The Disney Lorcana: Rise of the Floodborn card Shere Khan: Menacing Predator is an easy ticket to lore generation, offering one up every time any of the player's characters challenge an opponent
The last thing I want to touch on is the curve, which is more of a straight line of 2-, 3-, and 4-mana cards
Just ignore his seven mana transform ability, and lean on his ability to Surveil 1 to craft your hand to your liking