You now possess one or multiple (up to a maximum of 3) Meito otherwise known as prize blades, They are weapons that are renowned for their quality and prestige, possessing incredible durability, sharpness, and for some even special powers or curses.
The Meito could be in the form of whichever weapon you like and their quality would be equal to the 12 supreme grade blade like Mihawk Yoru or Whitebeard Murakumogiri. They could also possess abilities similar to Enma ability to draw out haki or be cursed like the Sandai Kitetsu. You could also choose for your blade to be a black blade or not.