Arachnophilia (3.5e Flaw)
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You really like spiders.
Prerequisite: Cannot have Arachnophobic
Effect: Any you see a spider, monstrous or otherwise, you must dedicate yourself to studying the creature. You must move towards the creature in the fastest and most direct manner, short of entering its threat range. From there you will observe behavior, and attempt to speak with it. If you go for more than two days without seeing a spider, you take a cumulative -1 per two days on all mental tasks.