Your supernatural focus helps you close off a foe's retreat. When you hit a creature with an Opportunity Attack, you can reduce the creature's Speed to 0 until the end of the current turn. You can then move up to half your Speed as part of the same Reaction. This movement doesn't provoke Opportunity Attacks.
Relentless Avenger
Raw data
{
"name": "Relentless Avenger",
"page": 117,
"level": 7,
"__prop": "subclassFeature",
"header": 2,
"source": "XPHB",
"entries": [
"Your supernatural focus helps you close off a foe's retreat. When you hit a creature with an {@action Opportunity Attack|XPHB}, you can reduce the creature's {@variantrule Speed|XPHB} to 0 until the end of the current turn. You can then move up to half your {@variantrule Speed|XPHB} as part of the same {@variantrule Reaction|XPHB}. This movement doesn't provoke {@action Opportunity Attack|XPHB|Opportunity Attacks}."
],
"className": "Paladin",
"classSource": "XPHB",
"subclassSource": "XPHB",
"subclassShortName": "Vengeance"
}