I recently played as Master yi lately, I noticed that whenever you build his attack speed up high enough, even though his passive says "Every -->4<-- consecutive attacks", it bugged out and the active procced before you hit the 4 consecutive attacks, thus making it so it activates before it's supposed to actually activate.
Not a bug. The doublestrike 2nd attack counts as an attack, so it is Every 4 at first, but if you continue attacking, it becomes every 3 until you stop.
His passive's second hit will count towards its next proc. will stack itself. If you are at 4 stacks and your passive activates, you already have a stack (from the double strike) towers the next Doublestrike.
Basically, from your first occurance of Doublestrike until your stacks fall off, you will proc it every third basic attack.
Also, Sated Devourer's Phantom Hit will increment his passive. If you had it, then AA->AA+PH would cause your next AA to Doublestrike.
Are you building devourer? o.o
