When you reduce an enemy to 0 Hit Points, you gain Temporary Hit Points equal to your Charisma modifier plus your Warlock level (minimum of 1 Temporary Hit Point). You also gain this benefit if someone else reduces an enemy within 10 feet of you to 0 Hit Points.
Dark One's Blessing
Raw data
{
"name": "Dark One's Blessing",
"page": 161,
"level": 3,
"srd52": true,
"__prop": "subclassFeature",
"header": 2,
"source": "XPHB",
"entries": [
"When you reduce an enemy to 0 {@variantrule Hit Points|XPHB}, you gain {@variantrule Temporary Hit Points|XPHB} equal to your Charisma modifier plus your Warlock level (minimum of 1 {@variantrule Temporary Hit Points|XPHB|Temporary Hit Point}). You also gain this benefit if someone else reduces an enemy within 10 feet of you to 0 {@variantrule Hit Points|XPHB}."
],
"className": "Warlock",
"classSource": "XPHB",
"basicRules2024": true,
"subclassSource": "XPHB",
"subclassShortName": "Fiend"
}