To those waiting for the new Black Cleaver

Imagine Cdr boots + new black cleaver = 40% cdr easily

Wukong cinderhulk black cleaver Jung ripepperoni

Cleaver will be bad for Riven until lategame and she will buy it only against armor stacking

Phage is not needed item for her at all, getting the cdr and hp crystal is not needed too. You need some sustain in lane - so the best rush item is tiamat, then you need last whisper, if the enemy is stacking armor... Most games are over by the time you have 3 items and boots, unless the enemy has waveclear and can stall the game.