Shadow dancer / Gore
or maybe something other ?
Tell me Guys !

CB/DS aren't very useful for Mosaic IMO. You kill stuff in 1hit regardless usually. Maybe for Ubers Gores would be best? I'd go for boots with resists as those are harder to come by. Tri res boots would probably be ideal. I use upgraded Aldurs boots and have nice MA IAS gloves with lightning resists to cap all resists.

nat boot is good especially if you using cold and lit sunders. i dont even bother with sunders tho, and especially with infinity. you can do 4 different kinds of damage

you have the anwser.