“The Thief’s Downfall! . . . It washes away all enchantment,
all magical concealment! They know there are imposers in
Gringotts, they have set off defenses against us!” -- Griphook (DH26)
A waterfall that can be released over the track at Gringotts that has the effect of washing away all enchantment, all magical concealment.
- This was released against Harry, Ron, Hermione, and Griphook during their raid on the Lestranges' vault. It removed the effects of Polyjuice Potion from Hermione, of a number of small charms and Transfigurations from Ron, and lifted the Imperius Curse from Bogrod, whom they had compelled to accompany them. It did not, however, damage Harry's Invisibility Cloak or other magical items that they had with them (DH25).