The spider eye in the entertaining game Minecraft is poisonous food that is obtained from spiders and is used for brewing. A spider eye applies a poison effect for 4 seconds, which reduces hunger and saturation. A spider eye can be prepared and used to create a Mundane Potion and Potion of Poison. A fermented spider eye can also be used to brew potions with negative effects and the Potion of Invisibility. The Minecraft cursor and game pointer with Spider Eye and Fermented Spider Eye!