When a Large or larger creature within 5 feet of you hits or misses you with an attack, you can use your reaction to attack that creature immediately after its attack, provided that you can see the creature.
Giant Killer
Raw data
{
"srd": true,
"name": "Giant Killer",
"page": 93,
"level": 3,
"__prop": "subclassFeature",
"header": 2,
"source": "PHB",
"entries": [
"When a Large or larger creature within 5 feet of you hits or misses you with an attack, you can use your reaction to attack that creature immediately after its attack, provided that you can see the creature."
],
"className": "Ranger",
"classSource": "PHB",
"subclassSource": "PHB",
"subclassShortName": "Hunter"
}