Kaldr - Ancient Apparition | New Dota Hero

Kaldr - Ancient Apparition
After I wrote about Slark - Murloc Nightcrawler, now I want to write about Kaldr - Ancient Apparition. Kaldr is a new hero since in Dota 6.65 and in Dota v6.66 he comes again with several changelogs. Here are the changelogs:
  • Cold Feet manacost increased from 90 to 90/100/110/120
  • Ice Blast impact delay is a little slower now
  • Ice Blast no longer pierces Shallow Grave
  • Ice Blast debuff is now purgable

I have not yet use this hero. Do you ever use Kaldr? If you ever use him, please share your experience in here :)