I'm DMing the starting campaign for the Lost Mines. Our group, is largely money based. Most of them go and do side quests and other jobs for money of notion. I want them to feel motivated to defeat the Black Spider, besides the wealth that they could possibly accumulate from defeating him and his minions. He is a drow and there is a drow in my group, so if there was a way that I could make him have some sort of grudge and want to hurt them (of Phandalin) that would really help. The other characters in my group are a dwarf cleric, half-orc paladin, and a high elf wizard.
What is the Black Spider's Goal? How can I get the PCs to want to fight the Black Spider, and why does He want to fight them?
Best Answer
The Black Spider's motivations are detailed in the Campaign Module
Since the Lost Mines of Phandelver Adventure is made freely accessible by Wizards of the Coast, I'm going to quote it here, but I'm putting it in spoiler markup to avoid spoiling players who might be in an (unmodified) LMoP campaign.
There's also some corroborating information found in the introduction of the module:
Below is my interpretation of what this says about their motivations, which might be obvious from context, but again, in spoiler markup: