I mean, sure, youve got Rekindling Phoenix and Glorybringer or whatever, but to just shut off the vast majority of creatures indefinitely
In addition, Burn is relatively forgiving, and inexpensivean attractive combo
Hammer tends to play poorly from behind, so they need a certain density of ways to protect their threats as they play an all in, protect the queen style of game
Expand your collection and exchange stories and cards with other enthusiasts
A card like Sphinx's Revelation draws you double the cards with this in play, and many commanders in these colors have guaranteed ways to gain life
One last relevant bit of information: cards with anything but the old borders aren't legal in Premodern