Entropy

You designate a cube of space up to five feet on any side that experiences rapid time passage thousands of times normal rate. Hourglasses run quickly, fruit ripens and rots, metal tarnishes, and any creature that enters or ends it's turn in the entropic space takes 1d8 necrotic damage from the effects of weathering and atrophy. This effect does not affect how a creature in the space perceives time, however. The spell ends once it damages a creature, or after a minute. Casting entropy again will dispel any previous castings.

*scales with level. +1d8 at levels 5, 11, and 17.