Damage prevention effects have a long history in MTG, stretching all the way back to Alpha with Fog
You can turn this treasure token, which has a mana value of zero, into something with the mana value of one and kind of follow your way up the chain, which feels very much reflecting [] Tony Stark's wealth, and also reflecting [entrepreneurial sense of] innovation, and [the] mechanized nature of tinkering and building things up [from nothing]
But what about second extra combat
Unfortunately, that archetype doesnt see a ton of play, but Adeline appears in a bunch of go-side Commander decks, as well
At the beginning of your end step, create a 3/3 black Dalek artifact creature token with menace if an opponent lost 3 or more life this turn
By flooding the battlefield, you create more mana which then lets you cast bigger and better stuff as the game progresses