Can someone help me end a debate over Randuin's Omen vs Frozen Heart first.
I got abused for building Frozen Heart on Zac when my plan was to get a Randuin's Omen right after. My logic is that the Aura from Frozen Heart stacks with the Cold Steel Passive from Randuin's Omen. If I got Randuin's Omen first, I would double up on the Cold Steel UNIQUE Passive when I build the Warden's Mail component, whereas if I got Frozen Heart first the Warden's Mail component would still be effective even before completing a full Randuin's Omen.

or
(plus boots)