Abjurer's Bangle

Alter: You can clasp or remove this metal bracelet around the wrist or ankle of yourself or a willing creature within your reach using an action. The bangle emits a ward of abjuration magic from it that has a number of hit points determined by the rarity. A creature wearing the bangle can use its reaction when it takes damage to speak the bangle's command word, causing the magical ward to take the damage instead. Any excess damage carries over to the creature when the bangle's ward is reduced to 0 HP, at which point the bangle becomes a nonmagical braclet.

Attunement: No
Rarity: Varies
Type: Bangle
Cost: Varies

Griffon's Saddlebag, Vol 2

Rarity	Ward HP	Cost
Uncommon	30	80gp
Rare	75	200gp
Very Rare	120	400gp