Usually, you'll see a little purple guy running around. Lich Mage. I think that's Necromancer's first summon, which is pretty much a skeleton with a purple robe and staff.
I heard a Necromancer in my party way back ago say something about getting a demon summon. Might have to look more into that.
EDIT: found a skill list.
Summons are Hellhound (31), Lich Mage (34), Corpse Golem (38), Hell Demon (40).
I'm surprised. I thought they had less summons and more spread out in levels.
And no, I don't think you can have more than one out, if that question comes up.
Last edited by Nihil679; 01-13-2010 at 06:46 AM.