Frosty!

nice guide

I would just like to say a massive thank you for this guide! I have just played my first game as Lich after randoming him and had a fantastic game supporting my lane (need to get better at warding and for once actually enjoyed playing DOTA!

That's a good point actually, as Tranquil Boots can be dissembled into Mekansm anyways (keep or sell the Ring of Protection, up to you), after which you can buy Phase Boots or Boots of Travel.

In my opinion, Phase Boots are better since you can quicky nuke slow and escape and running after creeps for sacrifice. Boots of Travel is good at lategame anyway.

+Rep/+1
Solid work in-progress. Only thing I have to nitpick so far:

"Long casting animation (but cancelable)"
"(but cancelable)" is redundant, all heroes can cancel their attack/backswings.

Also consider mentioning the standard Lich skill build seen in competitive play:
E/Q/Q/E/Q/R/Q/W/W/W/R/W/E/E/+/R

Only difference between this skill build and yours is timing of W/E. Ranks 3/4 E are very helpful if you have a Mekansm though.

I'm also skilling Frost Blast on lvl 3, I just changed the skillbuild. This build is kinda aggressive, will add the defensive build later on, as well as item explanations.

Actually it's situational if you play passive on lane go deny if agresive go frost blast

Looks good, one small change maybe? Take rank 2 frost nova at 3 rather than the lvl 2 deny.

So far so good keep it up :D