If you've got suggestions for the list, why not share them in the Wargamer Discord community
Otherwise, buying cards standalone is perfectly legit as well, especially for some of the less pricey picks from the latest Universes Beyond set
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Kindred Boon: If a creature that isn't of the chosen type somehow gets a divinity counter on it, that creature will have indestructible
On your end step you can create a copy of a token you control, if that token is a Squirrel, you make two of that token instead
Sure, we can set ourselves up for some shenanigans with that (Hell's Caretaker, Ashnod's Altar, Attrition, etc.) but the real fun is getting the opponents to sacrifice their stuff