As a Commander, she opens up your deck to play all of the Soul Sister effects, sure, but you still need a little direction with that, or youre going to be sitting doing a lot of nothing
Pleasingly, firebending neatly mirrors the mechanic colloquially known as firebreathing which gets a nod on one of the sets dragon cards
But because you are ramping hard with this deck, this is the ideal Temur commander if you happen to have an Apex Devastator you want to sleeve up, or perhaps Annoyed Altisaur, Call Forth the Tempest, Sakashima's Protege, etc
Hopefully we dont see a repeat when Target eventually starts selling trading cards in-store again
But that's not the card's best effect, that would be its ability to send up to two spell/trap cards from the user's hand or field to the graveyard in order to draw cards equal to the number of cards sent to the graveyard