This is one of the most immersive Lich builds you can get. Every item is detailed when you hover over it.
Note: Use "Sacrifice" out of XP range (1300) of the enemy to get the most out of it. Since 6.79 this gives you and everyone in range. It can be used together with Enchantress to level up faster. If one of her creeps is about to expire, sacrifice it.

I played over 250 games Lich on regular basis and play him competetivly on tier-5 position.

Hardsupport. Wardbitch. Earlygamecrusher.