You can use a bonus action to regain a number of hit points equal to half your hit point maximum. Once you use this boon, you can't use it again until you finish a long rest.
Boon of Recovery
RewardDMGp. 2322014
Raw data
{
"name": "Boon of Recovery",
"page": 232,
"type": "Boon",
"__prop": "reward",
"source": "DMG",
"entries": [
"You can use a bonus action to regain a number of hit points equal to half your hit point maximum. Once you use this boon, you can't use it again until you finish a long rest."
],
"reprintedAs": [
{
"tag": "feat",
"uid": "Boon of Recovery|XPHB"
}
]
}