Stories like Arni Brokenbrow's, and how he headbutted a troll and lived, or the Fearless Liberator, a Dwarf who saved his companions from between a giant's legs
Of course, Arahbos in-game impact cannot be overstated, as any commander sporting the eminence keyword is always going to be a powerful one, and being able to Giant Growth any of your Cats at the beginning of combat can be a game-breaking ability, especially early on
Make tokens, and this gets bigger
A while ago a friend of mine pulled an interesting card in a pack of Urza's Legacy
The only mode on here that seems underwhelming is the Squirrel tokens
It uses the surveil mechanic to power up its Commander, Mirko, Obsessive Theorist, while also allowing him to resurrect cards from the graveyard