By adding more card draw, you can ensure you see your removal and recursion more often your interaction and counterspells and chain that draw into more draw
Shes a brawler
Wheeling away your hand when it enters shows you lots of cards and stocks the graveyard (and perhaps triggering some discard synergies), then the second ability sets up your board to become incredibly threatening
In best-of-one, your sideboard is limited to 7 cards, while in best-of-three, your sideboard expands to 15
Although creativity is still widely used by competitive players, in a context where winning is the most important objective, the ability to play with decks tends to bring more results than the ability to create them
It offers a variety of utility abilities: tapping to add one colorless mana, drawing a card for four mana, and drawing a card then discarding a card for two mana