The Blue Sakura is a Pre-Hardmodesummoning weapon that can be crafted at a Work Bench. It summons a blue wind to fight for you.
Its best Modifier is Ruthless. The Mythical modifier provides the widest array of stats bonuses, but these primarily affect the initial summon rather than the resulting minion. Additionally, Minions cannot deal Critical hits. The only significant advantage a Mythical Blue Sakura has over a Ruthless one is knockback.