This spectral foe usually resides where one last died and lingers there while in possession of the player's precious Geo currency. Rancid Eggs grant the player the ability to summon their Shade, the hostile void creature that emerges from the player's shell when it is opened upon death.
RELATED: Hollow Knight: What The King's Brand Does (& Where To Find It) While sounding absolutely disgusting, these putrid eggs can be of great use to the Knight, especially if they have died recently. With the many collectibles that can be hoarded in Hollow Knight, players can get a little overwhelmed when trying to remember where things are and what they are used for in this challenging sidescrolling adventure.