Aboleo

Aboleo is a spell used to destroy shields created by the Shield Charm or the strengthened version of it, Protego Totalum. A shield created by the Shield Charm needs to be hit with only one use of this spell, however, Protego Totalum needs three casts of this spell to be demolished.

Notes and Trivia

 * Despite blocking behaving like a shield charm, Aboleo is ineffective against it.
 * This appears to be the canon Shield-Breaking Charm cast by Voldemort during the Battle of Hogwarts in 1998.