Transmigrated as a Necromancer? I’m Here for the Thrills

Other people transmigrate as overpowered heroes, but I transmigrated as a broke-ass necromancer? My starting kit is two items: a busted bell and a life-saving necklace. I'm dirt poor, and the Church and the Mage Tower are hunting me down? This is a hellish start. Who could survive this? Good thing I'm a veteran player who knows every trick in the book! Swarm tactics? Wearing them down with curses? A death knight order? I want it all! What? A troll's blocking the way? Watch me summon an army of undead and teach it a lesson! What? The lady mage looks down on me? Just wait, I'll make that girl one of my subordinates sooner or later! What? The count, the general, and the royal family are all fighting each other? Heh, heroes rise in troubled times, and I love this kind of excitement! Watch as the strongest necromancer makes the most of another world, summons armies of undead, sweeps across every corner of the land, and builds an empire of darkness!