The system message was a surprise for Quinn. This prompt made him feel that there was still a lot for him to learn about his Celestial self. He knew this due to him currently being in the lower levels of a celestial that there would be more things to learn, but this message made him realise that even more.
The change in soul weapon was quite handy as he could control his celestial blood and his blood aura in more menacing ways compared to when he just used his standard blood control. The scythes he used could expand the size of the handle and the blade while they would emit a red blood aura from their ends.
On top of that, Quinn noticed that not only could he use his blood, but just like before when using his Soul weapon, the addition of others' blood helped him become more versatile when using his blood moves.