When you take damage from any source, you can reduce that damage to 0. Once you use this boon, you can't use it again until you finish a short rest.
Boon of Invincibility
RewardDMGp. 2322014
Raw data
{
"name": "Boon of Invincibility",
"page": 232,
"type": "Boon",
"__prop": "reward",
"source": "DMG",
"entries": [
"When you take damage from any source, you can reduce that damage to 0. Once you use this boon, you can't use it again until you finish a short rest."
]
}