One thing she loves in particular is how the game lets them spotlight some more niche characters
There are a bunch of Commander Classics like Hornet Queen, Nantuko Vigilante, Caustic Caterpillar, future strong cards like Haywire Mite, multiplayer classics like flying regenerator Fog of Gnats and the card drawing and recurring Grave-Shell Scarab, token making Ant Queen, game winning rampers like Moldgraf Monstrosity, Giant Adephage and Living Hive
Now that I have thought about it a few days, I think Solitude is clearly the better of the two, since it is not only a premium removal spell but also a viable win condition with its 3/2 body
Tacking on 20 damage to any attacks your future Pokemon do is already nice, and then add in the fact that this card reduces the retreat cost to zero to whatever mon is equipped with this, and youre looking at a top-tier tool for the future deck archetype
In case you haven't noticed, most of the popular archetypes are also legacy decks that have received brand new support during this era