Ring of Vital Exchange

Wondrous item, Uncommon (requires attunement)

This small ring is made up of two interwoven snakes, one eating the other's tail. One is made of polished and brilliant mithril, while the other is made of tarnished bronze.

This ring has 3 charges. While wearing it, you may use an Action to spend 1 charge and cast the spell Wither and Bloom through it, using your spellcasting DC or 13, whichever is higher.
The ring gains 1d3 charges at each dawn.