Caesar, Legions Emperor , is the heart of the deck, producing soldier tokens and enabling aggressive strategies that pressure opponents while maintaining a fair amount of resource flow
That copy may flip later if certain conditions are met
You also have sources that double damage to make the burn hurt that much more such as Twinflame Tyrant, City on Fire, Fiery Emancipation, and Gratuitous Violence
There are a few decks that actual turn this rule into an exploitable advantage, using it as a free discard outlet to pitch giant creature cards to Reanimate next turn or a Dredge card such as Golgari Grave-Troll for subsequent self-milling, but in what I would call fair decks, this maximum hand size rule is not nice, especially when you are mana-screwed
Proxying in Commander Proxying for formats like Commander is what has given rise to the debate about proxies, more than any other format
Change it