You can roll 1d6 in place of the normal damage of your Unarmed Strike or Monk weapons. This die changes as you gain Monk levels, as shown in the Martial Arts column of the Monk Features table.
Martial Arts Die
Raw data
{
"name": "Martial Arts Die",
"page": 101,
"level": 1,
"srd52": true,
"__prop": "classFeature",
"header": 2,
"source": "XPHB",
"entries": [
"You can roll {@damage 1d6} in place of the normal damage of your {@variantrule Unarmed Strike|XPHB} or Monk weapons. This die changes as you gain Monk levels, as shown in the Martial Arts column of the Monk Features table."
],
"className": "Monk",
"classSource": "XPHB",
"basicRules2024": true
}