{
    "name": "cast a spell",
    "text": "The {NAME} casts a spell from its list of prepared spells, using a spell slot as normal.",
    "subfeatures": [
        {
            "trigger": [ "legendary action costing X", 3 ],
            "conditions": [],
            "effects": [{
                "target": "self",
                "effect": [ "Take action ACTION", "cast spell" ]
            }]
        }
    ]
}