NaturesAura/src/main/resources/data/naturesaura/advancements/end_flower.json

{
    "display": {
        "icon": {
            "item": "naturesaura:end_flower"
        },
        "title": {
            "translate": "advancement.naturesaura.end_flower"
        },
        "description": {
            "translate": "advancement.naturesaura.end_flower.desc"
        }
    },
    "parent": "naturesaura:wood_stand",
    "criteria": {
        "materials": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "items": ["naturesaura:end_flower"]
                    }
                ]
            }
        }
    }
}