Sash of Sorcerous Synergy

This miraculous, one-shouldered robe is made from fine fabrics that have been steeped in powerful magic and fastened with an ornate buckle. The sash has 5 charges and regains 1d4 + 1 expended charges daily at dawn. When an ally that you can see within 60 feet of you casts a spell while you're wearing this robe, you can use your reaction to expend 1 or more of the sash's charges to twist the spell with one of your known Metamagic options, without spending any sorcery points. The number of charges you expend is equal to the number of sorcery points the Metamagic option would normally cost. If using the sash would cause the spell to target a second creature, you choose the new target. In addition, when you use a Metamagic option on a spell while wearing this sash, you can change the style, color, and material of the garment and buckle. The sash's weight doesn't change. Regardless of its appearance, the sash can't be anything but a one-shouldered robe.