[GAMEPLAY] Selling Guinsoo double the effect of Black Cleaver

Guinsoo rageblade makes every basic attack proc 2 times the armor shred from Black cleaver, even after selling it.

How to reproduce the bug : Step 1) Buy a Guinsoo. Step 2) Charge it once at 6 stacks. Step 3) Sell it. Step 4) Buy a Black cleaver. Step 5) Your basic attack now proc Black Cleaver armor shred passive twice as much.

Tested as Tryndamere, worked 2 times on 2.