A great new mechanic could be a free way to exile the card in question to replace your next draw with a basic land, like land cycling but without getting to draw the card
sometimes you need to play to your deck's strengths, and that can mean sitting back and sacrificing your own creatures from time to time
Table of Contents show How Does Cleave Work
Sword of Hearth and Home definitely sounds like the kind of blade that a Hobbit (or, rather, Halfling) would find appealing
While its not a squirrel typal commander per se (unlike the secondary commander), its nice and open-ended enough that I could see this leading a few different decks, and the main set squirrels care about food tokens, so theres a place to start
The deck then adds a number of powerful artifacts and vehicles including The Belligerent (creates treasures/draw), Magmatic Galleon (powerful removal/strong vehicle), Dire Flail (buff pirate/craft with artifact), etc