Andratha’s Wand Spark

You touch a magic wand, rod, or staff that has 0 charges. It regains 1d4 + 1 expended charges. The item cannot gain more charges than its maximum. If you roll a 4 and the item can cast spells, it overloads and casts its lowest-level spell at a random target and it only regains 1 charge.

At Higher Levels. If you cast this spell using a spell slot of 4th level or higher, the item cannot be overloaded and regains the full charges as normal.