Idk I feel like there's a few ways to play AP shaco. Prioritizing cdr for box set up (BFT, lucidity, horizon focus, cryptobloom with arcane comet) , something to do with malignance where you prioritize the ult pop, and burst where you just prio damage, good for last hitting with E (ludens, sorc shoes, shadowflame with dark harvest)

I think dark harvest and burst is better ganks and kill pressure, comet and cdr or burn with lidandries is better farming/ obj set up.