Her value comes from multiple things
Most LGSs carry some quantity of new Commander precons, though hot decks like the Eldrazi precon will either sell out fast or already be sold out from preorders
Here is a list showing how many cards you can get for each round: You can open the map to find Card Battle opponents on the field
Legacy of the Duelist, which was released for PS4 and Xbox One back in 2015, and PC in 2016
(Theres also a brand new Trainer called Ruffian, who can discard both Tools and Special Energy from opponents cards to counter this.) Meanwhile, Hop has a Choice Band Tool that reduces energy costs by one, and does 30 more damage, when applied to Hops Pokmon
My deck has a lot of bricks to work with, so Card D seemed like an appropriate choice