Toughness-matters decks tend to be stuffed with Walls and creatures with defender, the kinds of hidden gems youd usually find gathering dust at the bottom of game store bargain bins
Not to mention, the connive triggers fills your graveyard and fixes your hand at the same time
Traveling Chocobo would be great just with the doubling effect, but it comes with the added bonus of being able to play lands and cast Bird spells from the top of your library
Meanwhile, those Steel cards in the deck are doing what Steel cards do best: They're taking up space on the battlefield with powerful attack and defense, while boosting each other
This creates a whole new way of approaching your turns
If that seems cruel, you could go for things like the M11 titans or the Ancient Metallic Dragon cycle from Commander Legends: Battle for Baldurs Gate