By casting it, players can deal 2 damage, and by casting another instant with 3 mana value or more, they can cast another, reaching the 4 damage required to give you a card draw during the end step
While mono white does have some aesthetically and thematically cool options, I wouldnt be super excited to be playing them
This matches the structure of recent sets like Duskmourn: House of Horror and Bloomburrow
Control decks want to be able to slow down the game by handling early aggressive plays that might do critical damage prior to mass removal, they want to be able to do multiple things in a turn and they want to be able to snipe out tenacious creatures that might survive a mass removal spell
With Ojutai, the control player could then swing once they had counterspell mana up, and upon connecting once, the game was usually over, as they could chain counterspells, other interaction, or more Ojutai