You gain the ability to use Wild Shape on your turn as a bonus action, rather than as an action.
Additionally, while you are transformed by Wild Shape, you can use a bonus action to expend one spell slot to regain 1d8 hit points per level of the spell slot expended.
{
"name": "Combat Wild Shape",
"page": 69,
"level": 2,
"__prop": "subclassFeature",
"header": 1,
"source": "PHB",
"entries": [
"You gain the ability to use Wild Shape on your turn as a bonus action, rather than as an action.",
"Additionally, while you are transformed by Wild Shape, you can use a bonus action to expend one spell slot to regain {@dice 1d8} hit points per level of the spell slot expended."
],
"className": "Druid",
"classSource": "PHB",
"subclassSource": "PHB",
"subclassShortName": "Moon"
}