Mimic

Description
Some items in the game have a Mimic hiding inside them and will suddenly appear and attack the player if they move adjacent to it. Mimics are represented by a capital M. When spending some time in a room with a disguised Mimic the item in which it is hiding will briefly flash M. The item the Mimic hides in always has another item diagonal to itself.

Battle info
Once a Mimic has been triggered it immediately attacks the player doing damage to them. The Mimic also outpaces the player should they run. Because they have only 100 health Mimics aren't likely to kill the player unless they are low on health in which case the player should carefully watch for signs of Mimics.