Its not the best thing you can do in Hearthhull, but any excuse to sleeve up a Reserved List card is enough to send that cards price rocketing to space
For example, if an effect allows you to put a creature card from your graveyard onto the battlefield, you can put Halvar, God of Battle onto the battlefield
Alongside the standard Pokmon TCG Pocket mechanic that restricts players from opening packs or Wonder Picking or, now, trading too much without spending real world money, the feature was also introduced with these Trade Tokens as an extra restriction
Automated Assembly Line The Creative Energy Commander precon leans into fabricate and artifact creatures, and if youre doing that sort of thing, Automated Assembly Line could generate more energy for you than any other source
What should I do before sending them over
White's Solitude is a Swords to Plowshares on a creature that can flash and has lifelink for 5 mana