Gloves of the Magister

Wondrous item, rare (requires attunement by a wizard)

These gold-embroidered black leather gloves have a maximum of 3 charges and renew 1d3 charges each day at dawn. When you cast a spell you may spend one or more of the gloves’ charges to increase the spell’s level without using a higher level spell slot. The spell’s level increases by the number of charges you apply. You cannot use the gloves to increase a spell’s level beyond the highest level of spell you can currently cast.