Chaos Knight is an image hero, and as such you want to work with that.
Images do not get "pure" bonus from items such as +dmg or +armor.
What they do get benefits from are stat items. This is why Armlet is such an amazing item on him. You can turn that on, use your ult and bam! Your images now have all that extra STR without the hp degen.
Originally Posted by Odin
Do you mean the critical abilities, or the actual +damage part? Because I did not realize that.
He means the acutal +damage part. Although images DO NOT BASH ever, even mkb mini bash they do however crit. On the other hand, since he already has a crit skill passive buriza is a huge waste of money on him.
As for item build, I agree with the second poster. Although if you really had the money instead of "stacking" HoTs (I really think stacking HoTs is a waste now that the regen won't stack) I'd make a Manta after the first one. It may be agility biased, but hey thats not really a bad thing and it gives you more images.
Vlads + Pers is bad, build stat based items.
Power Treads is actually hit and miss as the images will get the 10+ stats but will not get the +30% IAS. I actually like to get BoT on image heros, but Power Treads are fine too.