Helm of Salvation

Wondrous item, very rare (requires attunement)

While you are wearing this helm, you have advantage on all saving throws.

The Helm of Salvation has 3 charges. When a creature you can see fails a saving throw, you may use your reaction and expend a charge to cause the creature to reroll the saving throw. They must use the second roll. All charges are regained at dawn the following day.