Make a trade between getting CDR or getting damage
Basically the title but what do you guys think. Alot of champs just build as much CDR as possible like LeBlanc and she is still able to deal 1000 damage easily. I feel that if you take time to build cdr you should lose something for it but you look at the lucian or miss fortune who gets BC and ghostblade and they can destory squishies or tanks alike during that mid game.