A band that exudes mystic power. Merely possessing it allows for quicker incanting of spells. It's power has waned after excessive use.

This ring has 2 charges. When you cast a spell that has a casting time of 1 action, you can expend 1 charge and change the casting time to 1 bonus action for this casting. 
This ring regains both charges after a long rest.

Notes: Spellcaster