I am looking and looking at that spellbook, still trying to figure it out.
More questions
1- Skeletal minions - were there as a shield, fill-in-action when you were low on mana, on offense...?
2- Drain Life - was casted? Was that your finishing tool?
3- 1 meditation amulet. Were you counting on that it will not be dissolved? That players will not see it as a threat like they would if you were holding Sectarus, Flame Whip etc.? (I know they are mage restricted, just wanted make a point 
)
1. keejchen deserves credit for this. I played my Necro vs. his Elemental Lord and in some rounds I did not have the mana to summon anything, so he advised me to put them in. "were there as a shield, fill-in-action when you were low on mana" both of those. Even really good choice as Eternal Servant early as its easier to preserve 5 mana than 8 and get him back again. As per the first match his good as guard remover and taking a 4-5 dice blow.
I got real happy with them as I discovered I could play Idol and Deathlock in round 2 and 3 if I summoned them. Pretty sure now that its not a great idea.
2. Drain Life - I would say boulders are my finishing tool, but Drain Life should be good vs. armor and defenses, besides its one of the few ways I have to heal.
3. Well I thought I be fine with Cloak of Shadows, Nullify, putting Enfeeble on the enemy mage and hopefully put up a wall, so he has to go into the Graveyard zone to dissolve it. It does hurt this build a lot to loose that Amulet - still losing the Cloak, the Mage Wand or the Dragonscale Hauberk would be at least as bad.
