Spellstealer's Wand

Spellstealer’s Wand
Wand, very rare (requires attunement by a spellcaster)

The small gnarled hand at the end of this wand twitches and flexes occasionally.

This wand has 4 charges, and it regains 1 expended charge when you finish a long rest. As a reaction, you can expend 1 or more charges to cast the counterspell spell with this wand, using your spellcasting ability. For 1 charge, you cast the 3rd-level version of the spell. You can increase the spell slot level by two for each additional charge you expend. You have advantage on the ability check to counter a spell of a level greater than yours while using this wand.

Spellsteal. If you successfully counter a spell with this wand, you can choose to steal the countered spell and store it in the wand. Only a spell that requires an action or bonus action to cast can be stolen, and only one spell can be stored in the wand at a time. If you steal a spell while a spell is currently stored in the wand, the first spell is replaced. You can cast the stolen spell from the wand without requiring material components or expending a spell slot, using your spellcasting ability. After the spell is cast, it’s gone from the wand. If you attempt to steal a 6th level or higher spell with the wand, make an ability check using your spellcasting ability. The DC equals 8 + the spell’s level. On a success, the spell is stolen successfully. On a failure, the wand overloads, expending all remaining charges and you take force damage equal to 10 times the spell’s level. If a spell of 6th level or higher is stored in the wand when you finish a long rest, the spell is consumed and the wand regains all expended charges.

As the story goes, this wand was concocted from the severed hand of a thief and the soul of a wizard. Long ago, a daring thief snuck into the king’s palace and infiltrated the court wizard’s arcane library. A hoard of spell scrolls and magical artifacts were stored within. The thief took only the most powerful spell from the library, a wish. With this scroll, the thief wished for tremendous wealth. Riding high from their score, the thief went on a fabulous spending spree, attracting a lot of attention. By the time the king discovered he had been robbed, the thief was once again penniless and the wish long used up. In a rage, he arrested the thief along with his court wizard for allowing such an oversight. As punishment, the thief lost his hand and the wizard lost his life.