D&D General - When did araneas become shapechangers?

The aranea were first introduced in X1 - The Isle of Dread, back in 1981...but like you said: they weren't shapeshifters. They were just really smart spiders.

They were described as shapeshifters in the Savage Coast campaign setting, like @Azzy said, which was published in the mid-90s as part of the larger World of Mystara. You can read more about them and their lore over on the Vaults of Pandius website, here and here and here, without having to visit 1d4chan. ;)

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