Bands of Blood

The ring, when equipped does nothing until attuned to the wearer. When attuned, the ring splits and expands into two bands that close on the wrist and upper bicep of the wearer. At will, the wearer can cast a spell taking a number of d6 equal to the spell slot level plus they're spellcasting modifier.

Still new to D&D and would enjoy advice and maybe some added details to this magic item : )

 Had to rename cuz it referenced my campaign

Notes: Only those With the ability to use power from the Weave , Buff, Utility, Jewelry