Ruin Spider

D&D 2024 monster: Ruin Spider. Source: The Book of Many Things. challenge rating 5, creature type Monstrosity, Large size, speed 40 ft., climb 40 ft. The potent magic of a Deck of Many Things can have unpredictable effects on its environment, especially when the deck remains in one place for a long time. Ruin spiders arise when the magic of the deck transforms giant spiders into even more dangerous monsters whose acidic venom disintegrates everything it touches. A ruin spider is easily recognizable by anyone familiar with the Deck of Many Things because the pattern on the back of the cards is duplicated on the spider's carapace. Monstrosity Large 40 ft., climb 40 ft.