{ "parent": "minecraft:nether/find_fortress", "criteria": { "wither_skull": { "conditions": { "items": [ { "items": "minecraft:wither_skeleton_skull" } ] }, "trigger": "minecraft:inventory_changed" } }, "display": { "description": { "translate": "advancements.nether.get_wither_skull.description" }, "icon": { "count": 1, "id": "minecraft:wither_skeleton_skull" }, "title": { "translate": "advancements.nether.get_wither_skull.title" } }, "requirements": [ [ "wither_skull" ] ], "sends_telemetry_event": true }