How to fix yas
Remove double crit from passive
Add it to his windwall for a 20/40/60/80/100% crit is added into additional crit chance (rank 1 wind wall with 20% crit gives 4% bonus crit resulting in 24% crit chance)
As compensation yas dash now generates flow again
This cuts down his kill potential in lane but enforces his "move to survive" playstyle
Until mid/ late game whe he starts lvling wind wall
Edit: just to clarify his Q and AA crits still receive the current pentaly of reduced crit damage, this change is just designed to delay his power spike seeing as he can now get 100% crit off 1 item and crit runes with the 100% crit bonus