Originally Posted by Kasma
how do you use necrobook on him?
Ult, hit, stun, necro? mana burn? or Ult hit necro stun mana burn?
Items have a 0 cast point, so you ulti, hit, necro, stun. The necro-stun should take about 0.1 seconds longer than just stunning, whereas you'd delay casting necro by 0.4 seconds doing it the other way.
Then you double mana burn, and usually right click the hero with your minions while your hero tries to movement block them (if they aren't dead from the burst). If they have a stun/slow and still have mana, throw down that carapace if your blocking looks successful, so they have to wait for 4 seconds before trying to stun you.