You can attack twice instead of once whenever you take the Attack action on your turn.
Extra Attack
Raw data
{
"name": "Extra Attack",
"level": 5,
"__prop": "classFeature",
"source": "ValdaGunslinger",
"entries": [
"You can attack twice instead of once whenever you take the {@action Attack|XPHB} action on your turn."
],
"className": "Gunslinger",
"classSource": "ValdaGunslinger"
}