{ "parent": "minecraft:recipes/root", "criteria": { "has_creeper_head": { "conditions": { "items": [ { "items": "minecraft:creeper_head" } ] }, "trigger": "minecraft:inventory_changed" }, "has_the_recipe": { "conditions": { "recipe": "minecraft:creeper_banner_pattern" }, "trigger": "minecraft:recipe_unlocked" } }, "requirements": [ [ "has_the_recipe", "has_creeper_head" ] ], "rewards": { "recipes": [ "minecraft:creeper_banner_pattern" ] } }