This is idea for Critical strike icon  Critical Strike version of Youmuu's Ghostblade item Ghostblade

Youmuu's Ghostblade item.png Youmuu's Ghostblade originally was crits based but now it will be more focused on Assassins so I figure its good idea to give ADC similar items

invisible Champions cannot be targeted or auto attacked but their location can be briefly revealed when they take instant damage or Damage over Time has been applied to them

10 21 PBE Stealth Shimmer examples01:40

10 21 PBE Stealth Shimmer examples