There's no HP+MR finished item without CDR

There is also no finished armor + AP item without cdr

Cause theres only one hehe

Does not count? I know it only gives hp when active, but boy does it give hp then...

This is because MR is simply less efficient as a stat compared to armor or health. Almost all environmental damage from the map is physical except for Baron and Fountain, and even the champion pool and meta leans toward physical damage. You can make an item devoted solely to armor (Thornmail) while an MR item of similar design would become too niche to be really viable - i.e. Adaptive Helm is supposed to be that item, but it still needs other stats to make it viable.

Why?

That's because they're tank items, and 90% of tanks build 40% CDR. Besides, it's only 10% apiece. They'll hit 40% after 3+ items...it's not like they start the game with 40% CDR.

It's not a problem for me. I actually struggle to get 40% CDR in some of my games. I don't know how these people are getting 60% CDR in their games...

There is no ap+resistance item that doesn't have CDR.

There are only three items that give CDR+HP+Armor: