Probably just kill for exp.

You just pass the checks and then nothing, basically just avoiding to fight.

Also the loot can be sweet too, gith sword and short sword are pretty nice early on.

Councellor Florrick's favorite Warlock.

Back Black Geyser's DLC: https://www.kickstarter.com/projects/grapeocean/black-geyser-dlc-tales-of-the-moon-cult (RTwP Isometric cRPG inspired by BG1).