I want to suggest a change for any skill buff of Yuki, to provide like a mana shield... we can see this characteristic on many characters with playing with ice magic. I thinks Yuki in this moment don't have power like before in another moment to kill your enemies so fast, with brutality, and add a new mana shield i think is interesting, bringing more resistence to the snow lady for a new phase of support freezing enemies with your new ice hearts.